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AMSOIL Oil Filters
Find the right AMSOIL Motorcycle Oil Filter for your bike.
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The AMSOIL Chrome Oil Filter is the polished-chrome version of the AMSOIL Motorcycle Oil Filter line, built on the same EAOM platform as the Black Oil Filter and supplied with the same full-synthetic media, silicone anti-drainback valve, nitrile sealing gasket, and 11 to 17 psi bypass relief valve. The line carries the EAOMC master code, with individual part numbers EAOM103C, EAOM134C, and EAOM135C covering Harley-Davidson, BMW, Buell, Indian, Moto Guzzi, and other four-stroke powersports applications where a chrome finish matches the bike.
The Chrome Oil Filter shares the AMSOIL EAOM Motorcycle Oil Filter design end to end. The full-synthetic media, the silicone anti-drainback valve where the part number requires it, the nitrile sealing gasket, and the bypass relief valve setting are identical to the Black Oil Filter. Filtering performance is the same. The decision between chrome and black is purely a housing-finish choice, and most owners pick chrome to match Harley-Davidson Sportster, Softail, Touring, and Indian Chief and Scout V-twin engine cases that already carry chrome and polished hardware.
The Chrome Oil Filter delivers 99 percent filtering efficiency at 20 microns based on industry-standard ISO 4548-12 testing. Particles greater than 20 microns are the size range most directly tied to engine wear in V-twin and powersports engines, so a high efficiency at that point translates to better protection for cam lobes, lifters, rocker arms, valve guides, and bearing surfaces over the life of the lubricant.
The silicone anti-drainback valve in EAOM103C and EAOM134C stays flexible during cold starts, holding oil in the filter so the engine sees pressurized oil quickly when the bike is fired. The nitrile sealing gasket resists chemical breakdown for long filter life and consistent sealing across a riding season. The bypass relief valve opens between 11 and 17 psi, which protects against oil starvation during cold-start pressure spikes or if the media reaches its dirt-holding limit ahead of the next service.
The Chrome Oil Filter is finished in a polished chrome housing with the same fluted spin-on body as the rest of the EAOM line, which makes removal easy on the tight engine bays of late-model Harley-Davidson, Indian, Moto Guzzi, and BMW V-twins. The matching AMSOIL filter wrenches with a 3/8-inch square drive simplify removal where a band-style wrench will not fit: GA255 (65 to 67 mm) covers EAOM103C, and GA251 (76 mm) covers EAOM134C and EAOM135C.
The Chrome Oil Filter is used on four-stroke motorcycles, ATVs, UTVs, marine engines, snowmobiles, and certain power equipment where the application calls for a chrome housing or where the rider simply prefers chrome over black. The exact code depends on the engine and chassis. Confirm the right code by year, make, and model with the AMSOIL Vehicle Lookup Guide or check it against the matching pages in the best oil for Harley-Davidson guide before ordering.
For maximum engine protection, the Chrome Oil Filter should be replaced at every oil change at the vehicle manufacturer's recommended drain interval. Pairing the filter with an AMSOIL synthetic motorcycle oil from the AMSOIL motorcycle oil guide keeps the lubrication system on a single supplier program, which simplifies warranty conversations on Harley-Davidson, BMW, Indian, Moto Guzzi, Buell, and other V-twin and four-stroke applications.
| Property | Value |
|---|---|
| Style | Spin-on |
| Filtering efficiency (ISO 4548-12) | 99 percent at 20 microns |
| Anti-drainback valve material | Silicone (where applicable) |
| Sealing gasket material | Nitrile |
| Bypass relief valve pressure | 11 to 17 psi |
| Housing finish | Polished chrome |
| Body | Fluted for easy removal |
| Heights across the line | 2.69 in. to 3.40 in. (by part number) |
| Diameters across the line | 2.67 in. to 2.97 in. (by part number) |
| Threads across the line | M20 x 1.5, 3/4-16 (by part number) |
The Chrome Oil Filter is sold under the master code EAOMC with individual part numbers EAOM103C, EAOM134C, and EAOM135C. AMSOIL filters are backed by the AMSOIL Limited Liability Warranty, and using AMSOIL synthetic lubricants and filters does not void a new vehicle or equipment manufacturer warranty. Match the right code for the bike, ATV, UTV, snowmobile, or outboard with the AMSOIL Vehicle Lookup Guide, compare the filter against other AMSOIL choices in the oil filter guide, then order the AMSOIL Chrome Oil Filter.
THE ONLY OIL i WILL USE FOR MY CUMMINS 5.9
Would recommend this to a friend.
Engine actually feels like it runs better and smoother
Would recommend this to a friend.
Using a superior oil filter verse off the shelf filters at the auto parts store is worth. It goes hand in hand with Amsoil.
Would recommend this to a friend.
No. Both filters use the same AMSOIL EAOM Motorcycle Oil Filter media, anti-drainback valve, sealing gasket, and bypass relief valve. The difference is the housing finish: chrome on EAOM103C, EAOM134C, and EAOM135C; flat black on the matching EAOM103, EAOM134, and EAOM135 codes.
EAOM134C and EAOM135C cover most Harley-Davidson Big Twin and Sportster applications that take a 3/4-16 thread, 2.97-inch diameter, 3.40-inch tall spin-on filter. EAOM134C includes an anti-drainback valve and EAOM135C does not, matching the mounting orientation Harley-Davidson specifies for each model. The exact code for a specific year and model can be confirmed through the best oil for Harley-Davidson guide and the AMSOIL Vehicle Lookup Guide.
The Chrome Oil Filter should be replaced at every oil change at the vehicle manufacturer's recommended drain interval. Replacing the filter at every oil change protects the lubrication system across the full service interval of the AMSOIL synthetic motorcycle oil it is paired with.
EAOM103C uses a 65 to 67 mm filter wrench (AMSOIL part number GA255). EAOM134C and EAOM135C use a 76 mm filter wrench (AMSOIL part number GA251). Both wrenches feature a 3/8-inch square drive for use with a standard ratchet on tight motorcycle chassis where a band-style wrench will not fit.
EAOM103C is the chrome version that fits many of the smaller ATV, UTV, marine, and metric motorcycle applications covered by the EAOM103 black filter. Most sport bikes use a black housing as standard equipment, but EAOM103C is available for owners who want the matching chrome look on a build. Check the application against the AMSOIL Vehicle Lookup Guide before ordering.
No. Using AMSOIL synthetic lubricants and AMSOIL filters does not void a new vehicle or equipment manufacturer warranty. AMSOIL filters are also backed by the AMSOIL Limited Liability Warranty separately from the vehicle warranty.