How to select the right FilterMag for oil filters.
1. Choose Your Protection Level
Maximum Protection—Pair of SS or MC/MB FilterMags
Powerful Protection—Single SS or MC/MB FilterMag
Expose all of the engine oil flowing through the filter to Filtermag. This provides twice the opportunity for FilterMag to capture wear-causing particles in your oil.
A single FilterMag gives your engine powerful protection to remove wear-causing particles at a lower cost.
2. Choose your size based on filter diameter
- Measure the outside diameter (O.D.) of your filter, or
- Search for your filter’s outside diameter (O.D.) at any filter manufacturer’s website.
Please feel free to use the links provided in the Filter Lookup box to the right.
FilterMag SS models come in three sizes ranges (Small, Medium, and Large).
Chrome (MC) or Matte Black (MB) models are available only in Medium.
Small, Medium, and Large FilterMags
Maximum Protection
Powerful Protection
SS-250 Small, Pair, Maximum Protection
The SS250PR fits spin-on filter diameters from 2.5 in. (64mm) to 2.8 in. (71mm).
$124.99
SS-300 Medium, Pair, Maximum Protection
The SS300PR fits spin-on filter diameters from 2.9 in. (74mm) to 3.4 in. (86mm).
$124.99
Out of stock
SS-365 Large, Pair, Maximum Protection
The SS365PR fits spin-on filter diameters from 3.5 in. (89mm) to 4.0 in. (102mm).
$124.99
Out of stock
SS-250 Small, Powerful Protection
The SS250 fits spin-on filter diameters from 2.5 in. (64mm) to 2.8 in. (71mm).
$72.99
SS-300 Medium, Powerful Protection
The SS300PR fits spin-on filter diameters from 2.9 in. (74mm) to 3.4 in. (86mm).
$76.99
Out of stock
SS-365 Large, Powerful Protection
The SS365PR fits spin-on filter diameters from 3.5 in. (89mm) to 4.0 in. (102mm).
$79.99
Out of stock
Chrome and Matte Black FilterMags. Medium Size Only.
Maximum Protection
Powerful Protection
MC-300 Medium, Chrome, Pair, Maximum Protection
The MC300PR has a chrome faceplate. The FilterMag logo can be removed. Fits spin-on filter diameters from 2.9 in. (74mm) to 3.4 in. (86mm).
$174.99
MB-300 Medium, Black, Pair, Maximum Protection
The MB300PR has a paintable matte black faceplate. It fits spin-on filter diameters from 2.9 in. (74mm) to 3.4 in. (86mm).
$174.99
MC-300 Medium, Chrome, Powerful Protection
The MC300 (chrome) is perfect for American motorcycles that only have room for a single FilterMag installation. The MC300 has additional magnetic power than the SS300 to provide full protection to your bike’s engine. It fits spin-on filter diameters from 2.9 in. (74mm) to 3.4 in. (86mm).
$99.99
MB-300 Medium, Black, Powerful Protection
The MB300 (paintable matte black) is perfect for American motorcycles that only have room for a single FilterMag installation. The MB300 has additional magnetic power than the SS300 to provide full protection to your bike’s engine. It fits spin-on filter diameters from 2.9 in. (74mm) to 3.4 in. (86mm).
$99.99
What is the difference between the
MC/MB-300 and the SS-300?
The MC/MB-300 (left) features:
- The MC/MB-300 wraps around the filter a full 180° and is 2.6 in. (67mm) tall.
- The MC/MB-300 has taller magnets (plus two additional magnets) than the SS-300 resulting in 54% more magnetic contact area.
- Available in brilliant polished chrome or matte black (paintable).
The SS-300 (right) has a 132° arc and is 1.9 in. (48mm) tall.
FilterMags for Automatic Transmissions
Maximum Protection
TM-360 for Automatic Transmissions, Maximum Protection
The FilterMag TM360 is designed to snap externally on automatic transmission fluid pans. Use the TM360 with double the magnetic power of the TM180 for full protection.
$81.99
Powerful Protection
TM-180 for Automatic Transmissions, Powerful Protection
The FilterMag TM180 is designed to snap externally on automatic transmission fluid pans. Use the TM360 with double the magnetic power of the TM180 for full protection.
$47.99
FilterMags for Differentials and Manual Transmissions
GP-101 for Differentials and Gearboxes
The FilterMag GP101 is designed to be installed internally on the inside cover of differentials and gearboxes during servicing.
$37.99












