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OIL COOLERS:
All of the following parts are for the ORIGINAL YAMAHA OIL COOLERS only, and will not fit on any aftermarket style oil coolers.
Generally, the factory oils coolers as used on XJ650 Turbo, XJ650, XJ750, and various XJ900 models are very reliable and trouble-free. However, the o-rings and dowel pins should be replaced whenever the cooler lines are disturbed or show evidence of leaking.
Complete Oil Cooler Retrofit Kits:
Sometimes it’s really tough to keep your cool..........especially if you’re an air-cooled engine stuck in traffic in the middle of a global-warming summer. Not to worry, we’ve got what’s needed for you to keep your cool and still look good while doing so.
Unknown to many owners, Yamaha actually equipped most of their rest-of-the-world XJ models --- in Euroland, in the Land Down Under, in the Land of the Rising Sun, etc. ---- with oil coolers from the factory. It was only here in North American that the XJ550, XJ650 Maxim and *XJ650RJ Seca, and the XJ750 models were left to fend for themselves. Combined with the penchant for Yamaha to “lean tune” their engines to meet EPA emissions requirements, this is an unfortunate circumstance, and keeping your engine oil cool is THE best way to insure internal engine longevity.
Why did this happen? It certainly isn’t due to geographic considerations……..London, England and Paris, France are certainly not hotter locales than, let’s say, Yuma Arizona or anywhere south of the Mason-Dixon Line…….no, it was most probably a cost-savings measure in that era of cost-conscious buyers. The only North American models that got the oil coolers were the XJ650 Turbo (or otherwise the engine would have dropped dead after 10,000 miles or so) and the one-year-only XJ900 “flagship” models (*actually, late-year XJ650RJC Seca Canadian models….the ones painted red…..also came with factory oil coolers, but most probably they were already-completed bikes destined for the European market that were hastily “converted” to a North American model to meet an unexpected demand for these bikes --- or to dump them ---- in the Canadian marketplace).
We’ve now assembled correct, true “bolt-in” FACTORY OIL COOLER KITS that allow you to upgrade your engine to the same standards that the rest of the world has enjoyed for 30+ years. Luckily for us, all XJ650 and all XJ750 air-cooled model frames already have the oil radiator mounting holes tapped in the front frame cross-bar, and the XJ650RJ Seca and all XJ750 air-cooled models have the small “split-ring” bracket under the steering pipe where the top of the oil radiator is secured………..so there’s no cutting, welding, drilling, or fabricating necessary to install these kits. And since they’re put together from a combination of original and refurbished OEM parts, they’ll fit first time, every time……….so you can get your kool on with just a few hours work.
The XJ650 Maxim models will require the installation of an upper cooler retaining "loop bracket", which is included with those kits.
All systems will fit bikes with stock or aftermarket exhaust, with or without fairings, and require simple tools to install.
You might want to also consider upgrading to one of our SPIN-ON OIL FILTER CONVERSION KITS, as now would be the most efficient time to do so, and would truly bring your bike into the modern age, oil-system wise! All kits come with all necessary parts for installation, including new o-rings, mounting hardware, and a mounting diagram.
HCP21917 Refurbished original FACTORY OIL COOLER KIT, complete bolt-in system contains the oil cooler radiator, the radiator-to-oil distribution (“adapter”) plate hoses, the adapter plate, and all associated hardware, grommets, o-rings, etc. Fits all 1984-85 FJ600 models. NOTE: as with the factory system, you will need to retain and re-use your original oil filter cover and mounting bolt/bypass valve, as these items are not included with this kit.
$ 699.95
HCP21695 Refurbished original FACTORY OIL COOLER KIT, complete bolt-in system contains the oil cooler radiator, the radiator-to-oil distribution (“adapter”) plate hoses, the adapter plate, and all associated hardware, grommets, o-rings, etc. Fits all 1980-81 XJ650 Maxim and Midnight Maxim models, XJ650 Euro, and non-yics XJ650RJ Seca models. NOTE: some very early production XJ650 Maxim models did not come with the two M6-size threaded holes for the oil cooler radiator mounting in the frame cross-tube. You must check and verify that your frame has these two smaller (m6) holes in the frame cross-tube in order to use this kit! NOTE: as with the factory system, you will need to retain and re-use your original oil filter cover and mounting bolt/bypass valve, as these items are not included with this kit. NOTE: most XJ650 Maxim models did not come with the welded-on loop bracket to the front frame gusset which the upper stud of the oil cooler radiator mounts into. This this loop bracket is necessary to properly mount the factory cooler (to keep it from vibrating unnecessarily). This kit contain a reproduction loop bracket that can be spot-welded or screwed into the front frame gusset, along with an alignment/placement template. This bracket must be installed for a secure radiator mounting! All XJ650RJ Seca and XJ650 Euro models came from the factory with this loop bracket already installed (even if the bike did not have the factory oil cooler). If you plan to install the loop bracket with screws (rather than welding it on), you should also purchase the HCP23045 bracket installation kit below.
$ 679.95
HCP21696 Refurbished original FACTORY OIL COOLER KIT, complete bolt-in system contains the oil cooler radiator, the radiator-to-oil distribution (“adapter”) plate hoses, the adapter plate, and all associated hardware, grommets, o-rings, etc. Fits all 1982-84 XJ650 Maxim and all 1981-83 XJ750 models. NOTE: as with the factory system, you will need to retain and re-use your original oil filter cover and mounting bolt/bypass valve, as these items are not included with this kit. NOTE: most XJ650 Maxim models did not come with the welded-on loop bracket to the front frame gusset that the upper stud of the oil cooler radiator mounts into. This loop bracket is necessary to properly mount the factory cooler (to keep it from vibrating unnecessarily). This kit contain a reproduction loop bracket that can be spot-welded or screwed into the front frame gusset, along with an alignment/placement template. This bracket must be installed for a secure radiator mounting! If you plan to install the loop bracket with screws (rather than welding it on), you should also purchase the HCP23045 bracket installation kit below.
$ 679.95
HCP22051KIT Aftermarket oil cooler LOOP BRACKET. For all XJ650 Maxim and Midnight Maxim models which do not have the factory oil cooler radiator stud bracket loop on the steering tube frame gusset. You'll need to install this reproduction loop bracket that is included with our oil cooler kits. This bracket can be welded (recommended method) or screwed onto the frame gusset. If you choose to use screws to mount the bracket, you will need the HCP23045 installation kit listed below, which contains two of the correct size screws and the proper size carbide drill bit (the frame gusset requires a carbide drill bit to drill though it). A locating template is included with the bracket that allows you to line-up and properly locate the loop bracket on the frame. The HCP23045 loop bracket installation kit is not included in this kit!
$ 39.95
HCP23045 Aftermarket oil cooler loop bracket INSTALLATION KIT. For all XJ650 models which do not have the factory oil cooler radiator stud bracket loop on the steering tube frame gusset, you will need to install the reproduction loop bracket that is included with our oil cooler kits. This bracket can be welded (recommended method) or screwed onto the frame gusset. If you choose to use screws to mount the bracket, you will need this installation kit, which contains two of the correct size screws and the proper size carbide drill bit (the frame gusset requires a carbide drill bit to drill though it). The HCP22051KIT loop bracket is not included in this kit!
$ 17.95
HCP21914 Refurbished original FACTORY OIL COOLER KIT, complete bolt-in system contains the oil cooler radiator, the radiator-to-oil distribution (“adapter”) plate hoses, the adapter plate, and all associated hardware, grommets, o-rings, etc. Fits all 1982-83 XJ650 Turbo models. NOTE: as with the factory system, you will need to retain and re-use your original oil filter cover and mounting bolt/bypass valve, as these items are not included with this kit.
$ 549.95
HCP21916 Refurbished original FACTORY OIL COOLER KIT, complete bolt-in system contains the oil cooler radiator, the radiator-to-oil distribution (“adapter”) plate hoses, the adapter plate, and all associated hardware, grommets, o-rings, etc. Fits all 1984 XJ750RL, 1983-84 XJ900RK/RL, and 1985 XJ900N and FN (1FX and 58M) models. NOTE: as with the factory system, you will need to retain and re-use your original oil filter cover and mounting bolt/bypass valve, as these items are not included with this kit.
$ 679.95
Oil Cooler System Radiators and Mounting Hardware:
HCP11786 OEM rebuilt oil cooler RADIATOR, flushed, core cleaned, fins straightened, and repainted, ready for install! This is a rebuilt (used) factory oil cooler for all 1984-85 FJ600 models. Mounting hardware, hoses, etc. are not included. A $ 75.00 core charge applies to this item, and a re-usable, same-model oil cooler must be returned for the core charge to be refunded. NOTE: "re-usable" means it is complete and has not been physically damaged in any way, in particular the lower threads, mounting bracket, and the actual tank itself.
$ 299.95 + $ 75.00 refundable core charge
HCP3153 OEM rebuilt oil cooler RADIATOR, flushed, core cleaned, fins straightened, and repainted, ready for install! This is a rebuilt (used) factory oil cooler for all XJ650 Turbo models. Mounting hardware, hoses, etc. are not included. A $ 75.00 core charge applies to this item, and a re-usable, same-model oil cooler must be returned for the core charge to be refunded. NOTE: "re-usable" means it is complete and has not been physically damaged in any way, in particular the lower threads, mounting bracket, and the actual tank itself.
$ 179.95 + $ 75.00 refundable core charge
HCP15329 OEM rebuilt oil cooler RADIATOR, flushed, core cleaned, fins straightened, and repainted, ready for install! This is a rebuilt (used) factory oil cooler for all Euro XJ650, XJ650RJC Seca, Euro XJ750, and XJ750 Police models. Mounting hardware, hoses, etc. are not included. A $ 75.00 core charge applies to this item, and a re-usable, same-model oil cooler must be returned for the core charge to be refunded. NOTE: "re-usable" means it is complete and has not been physically damaged in any way, in particular the lower threads, mounting bracket, and the actual tank itself.
$ 399.95 + $ 75.00 refundable core charge
HCP3154 OEM rebuilt oil cooler RADIATOR, flushed, core cleaned, fins straightened, and repainted, ready for install! This is a rebuilt (used) factory oil cooler for all XJ750RL, XJ900RK, RL, N, and FN models. Mounting hardware, hoses, etc. are not included. A $ 75.00 core charge applies to this item, and a re-usable, same-model oil cooler must be returned for the core charge to be refunded. NOTE: "re-usable" means it is complete and has not been physically damaged in any way, in particular the lower threads, mounting bracket, and the actual tank itself.
$ 299.95 + $ 75.00 refundable core charge
HCP3159 OEM oil cooler radiator upper mounting plate stud RUBBER GROMMET, use 1 per radiator on all 1984-85 FJ600, 1986-88 FZ600, 1989-90 XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler. Each:
$ 10.95
HCP3155 OEM oil cooler radiator lower mounting plate hole RUBBER GROMMET. This grommet uses a metal spacer ("collar") mounted within it for stability, part number HCP3156 below. Use 2 per radiator on all FJ600, XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler. Each:
$ 5.95
HCP21690 Aftermarket oil cooler radiator lower mounting plate hole RUBBER GROMMET. This grommet uses a metal spacer ("collar") mounted within it for stability, part number HCP3156 below. Use 2 per radiator on all FJ600, XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler. NOTE: this grommet is slightly narrower than the HCP3155 original and requires the use of our spacer washer HCP21691 below to “make up” the additional depth. Each:
$ 1.95
HCP21691 Aftermarket oil cooler radiator lower mounting plate hole grommet SPACER WASHER, needed to create the additional depth when using the aftermarket HCP21690 grommet (above). This spacer should be used on the “rear” side of the grommet, between the cooler mounting plate and the frame. Use 1 per grommet when using the HCP21690 grommet. Each:
$ 0.95
HCP3156 OEM oil cooler radiator lower mounting plate hole rubber grommet GUIDE COLLAR, use 1 per grommet, 2 per radiator on all FJ600, XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler. Each:
$ 7.95
HCP3158 OEM oil cooler radiator lower mounting plate MOUNTING BOLT, use 2 per radiator on all FJ600, XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler. Each:
$ 2.95
HCP21689 Aftermarket oil cooler radiator lower mounting plate MOUNTING BOLT, use 2 per radiator on all FJ600, XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler. Each:
$ 1.95
HCP3157 OEM oil cooler radiator lower mounting plate bolt SPECIAL WASHER, use 1 per bolt, 2 per radiator on all FJ600, XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler. Each:
$ 2.95
Oil Cooler System Hoses:
HCP3145 OEM oil cooler radiator-to-adapter plate OIL TRANSFER HOSE, left side. This hose will not work on other style factory radiators, as the upper fitting (to the radiator) is a completely different style. Fits all XJ750RL and XJ900RK, RL, N, and FN models.
$ 229.95
HCP3146 OEM oil cooler radiator-to-adapter plate OIL TRANSFER HOSE, right side. This hose will not work on other style factory radiators, as the upper fitting (to the radiator) is a completely different style. Fits all XJ750RL and XJ900RK, RL, N, and FN models.
$ 149.95
HCP3151 OEM oil cooler hose upper fitting-to-oil cooler radiator O-RING, fits inside the oil cooler hose upper fitting and seals to the oil radiator fluid ports. Good idea to replace these every time you remove the lines from the radiator. Order the HCP3152RD dowel pin separate. Use 1 per hose, 2 per bike. For all XJ650 and XJ750 models only. Each:
$ 4.95
HCP21041 Aftermarket oil cooler hose upper fitting-to-oil cooler radiator O-RING, fits inside the oil cooler hose upper fitting and seals to the oil radiator fluid ports. Good idea to replace these every time you remove the lines from the radiator. Order the HCP3152RD dowel pin separate. Use 1 per hose, 2 per bike. For all XJ650 and XJ750 models only. Each:
$ 2.95
HCP3152RD OEM oil cooler hose upper fitting-to-oil cooler radiator DOWEL PIN, fits inside the oil cooler hose upper fitting and, along with the HCP3151 or HCP21041 o-ring, seals the hose to the oil radiator fluid ports. Good idea to replace these every time you remove the lines from the radiator. Order the o-rings separate. Use 1 per hose, 2 per bike. For all XJ650 Turbo models only. Each:
$ 5.95
HCP11845 OEM oil cooler hose upper fitting-to-oil cooler radiator DOWEL PIN, fits inside the oil cooler hose upper fitting and, along with the HCP3151 or HCP21041 o-ring, seals the hose to the oil radiator fluid ports. Good idea to replace these every time you remove the lines from the radiator. Order the o-rings separate. Use 1 per hose, 2 per bike. For all XJ650 non-Turbo, XJ750 Euro and XJ750P models only. Each:
$ 2.95
HCP3149 OEM oil cooler hose lower flange-to-adapter housing O-RING, fits inside the oil cooler hose lower mounting flange and seals to the adapter housing. Good idea to replace these every time you remove the lines from the cooler adapter housing. Use 1 per hose, 2 per bike. For all 1984-85 FJ600, 1986-88 FZ600, 1988-89 XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler. Each:
$ 4.95
HCP16854 Aftermarket oil cooler hose lower flange-to-adapter housing O-RING, fits inside the oil cooler hose lower mounting flange and seals to the adapter housing. Good idea to replace these every time you remove the lines from the cooler adapter housing. Use 1 per hose, 2 per bike. For all 1984-85 FJ600, 1986-88 FZ600, 1988-89 XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler. Each:
$ 2.95
HCP3150 OEM oil cooler hose lower flange-to-adapter housing MOUNTING BOLT, used to secure the hose lower flange to the adapter housing. Use 2 per hose flange, 4 per bike. For all FJ600, XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler. Each:
$ 1.95
HCP6640 Aftermarket oil cooler hose lower flange-to-adapter housing MOUNTING BOLT, used to secure the hose lower flange to the adapter housing. Use 2 per hose flange, 4 per bike. For all FJ600, XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler. Each:
$ 1.25
HCP3164 OEM oil cooler hose RETAINING CLAMP, OUTER. For all XJ models using the factory cooler and hoses. The matching inner clamp (HCP11790) which bolts to the engine case is listed below. Use 1 per bike on all FJ600, XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler. Each:
$ 7.95
HCP971 OEM oil cooler hose inner-to-outer retaining clamp BOLT. For all XJ models using the factory cooler and hoses. Use 1 per bike on all FJ600, XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler. Each:
$ 2.50
HCP3162 OEM oil cooler hose inner-to-outer retaining clamp bolt GUIDE COLLAR. For all XJ models using the factory cooler and hoses. Use 1 per bike on all FJ600, XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler. Each:
$ 5.95
HCP11790 OEM oil cooler hose RETAINING CLAMP, INNER (to cylinder head). Use 1 per bike on all 1984-85 FJ600 models with a factory-installed oil cooler. NOTE: this clamp will also work on all XJ550, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler, but may need the mounting holes slightly enlarged and, for XJ650 with the non-YICS engines, a third mounting hole will need to be drilled. This bracket attaches to the cylinder head-to-jugs studs on the front of the engine. Each:
$ 14.95
HCP3968 OEM oil cooler hose inner retaining clamp NUT. For all 1984-85 FJ600 and 1980-81 XJ650 Euro models using the factory cooler and hoses. Use 1 per bike. Each:
$ 2.95
HCP24059 Aftermarket oil cooler hose inner retaining clamp NUT. For all 1984-85 FJ600 and 1980-81 XJ650 Euro models using the factory cooler and hoses. Use 1 per bike. Black-oxide coated stainless steel. Each:
$ 1.95
HCP11846 OEM oil cooler hose inner retaining clamp NUT. For all 1981 XJ750RL and XJ900 models using the factory cooler and hoses. Use 2 per bike. Each:
$ 2.95
Oil Cooler System Adapter Housing:
HCP3140 OEM oil cooler mounting ADAPTER HOUSING, this is the large cast aluminum finned plate that fits against the crankcase and accepts the lower ends of the oil cooler hoses. For all 1984-85 FJ600, 1986-88 FZ600, 1989-90 XJ600, XJ650, XJ750, and all XJ900RK and RL models with a factory-installed oil cooler. Necessary when adding a factory oil cooler to a non-factory cooler model. This is NOT the finned outer oil filter "cover" that the oil filter element lives within (that filter housing cover is the same on factory oil cooler and non-oil cooler models). This housing does not include but requires the installation of the HCP3141 bypass valve PLUNGER, the HCP3142 bypass valve SPRING, the HCP3143 bypass valve CAP WASHER, and the HCP3144 CIRCLIP in order to be a "complete" adapter plate. This adapter housing is still necessary even when installing our aftermarket HCP1284xx series spin-on can oil filter conversion kits on a factory oil-cooler equipped bike. It is NOT needed when installing the spin-on can filter conversion kits on a NON-cooler bike.
$ 84.95
HCP3141 OEM oil cooler adapter housing oil pressure relief BYPASS PLUNGER, fits inside the bored recess in the HCP3140 adapter housing. For all FJ600, XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler.
$ 3.95
HCP3142 OEM oil cooler adapter housing oil pressure relief BYPASS PLUNGER SPRING, fits inside the bored recess in the HCP3140 adapter housing, on top of the plunger. For all FJ600, XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler.
$ 4.95
HCP3143 OEM oil cooler adapter housing oil pressure relief BYPASS PLUNGER SPRING CAP WASHER, fits inside the bored recess in the HCP3140 adapter housing, on top of the spring. For all FJ600, XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler.
$ 8.95
HCP3144 OEM oil cooler adapter housing oil pressure relief BYPASS PLUNGER SPRING CAP WASHER CIRCLIP. Retains the plunger, spring, and washer inside the bored recess in the HCP3140 adapter housing. For all FJ600, XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler.
$ 3.95
HCP1488 OEM oil filter element cover-to-block O-RING, for all XJ550, 1984-85 FJ600, 1984-91 XJ600 Euro, 1986-88 FZ600, 1986-90 YX600 Radian, 1992-98 XJ600 Seca II, 1992-2002 XJ600 Euro, all XJ650, XJ700, XJ750, and XJ900RK, RL, N/FN, and F models, use 1 per engine. NOTE: all models using the factory oil cooler system will require 2 of the o-rings; one between the cooler adapter plate and the block, and another between the filter element cover and the adapter plate.
$ 8.95
HCP2283 Aftermarket oil filter element cover-to-block O-RING, for all XJ550, 1984-85 FJ600, 1984-91 XJ600 Euro, 1986-88 FZ600, 1986-90 YX600 Radian, 1992-98 XJ600 Seca II, 1992-2002 XJ600 Euro, all XJ650, XJ700, XJ750, and XJ900RK, RL, N/FN, and F models, use 1 per engine. NOTE: all models using the factory oil cooler system will require 2 of the o-rings; one between the cooler adapter plate and the block, and another between the filter element cover and the adapter plate.
$ 5.95
Oil Cooler System Adapter Housing Union Bolt:
We now have available the large hex-headed Oil Cooler Adapter Housing UNION BOLT. This is the bolt that has both external threads (where the bolt threads into the engine block) and the internal threads (where the oil filter housing cover/bypass valve bolt threads into). This "union" bolt is what actually holds the oil cooler adapter housing to the block. Many of the used factory oil coolers that are found for sale have all the component pieces needed to install a factory cooler onto a non-cooler bike EXCEPT FOR THIS BOLT, and without it, well, it just ain't gonna happen---this is a very specialized design bolt. For all XJ550 models (with or without the oil cooler), all XJ650 Turbo models, and all XJ900RK models, or on any XJ model adapting a factory oil cooler to a non-oil cooler model.
The large, flat, special thickness washer that goes with this bolt is also available and is listed separately, as well as many of the various factory oil cooler repair pieces, including the adapter plate and associated parts.
HCP3165 Aftermarket oil cooler adapter housing-to-block UNION BOLT, cnc-machined high-carbon steel bolt exactly replaces the original in all aspects. For all 1984-85 FJ600, 1986-88 FZ600, 1989-90 XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler.
$ 59.95
HCP3163 OEM oil filter housing union bolt PLATE WASHER, fits under the head of the HCP3165 union bolt above and mates to the crankcase. For all XJ550 models only.
$ 3.95
HCP3166 OEM oil filter housing union bolt PLATE WASHER, fits under the head of the HCP3165 union bolt above and mates to the outer surface of the HCP3140 adapter housing. For all 1984-85 FJ600, 1986-88 FZ600, 1989-90 XJ600, XJ650, XJ750, and XJ900RK, RK, and N/FN models with a factory-installed oil cooler.
$ 5.95