Sierra 18-7876-1 Oil Filter Replaces 35-866340Q03

The long GM marine oil filter, 5.32 in tall on a 13/16-16 thread. Marine filters are not automotive filters with a different label: the canister is epoxy coated and heavy walled because it lives in a bilge, and the anti-drain-back valve keeps oil in the filter so the engine is not spinning dry on the first turn after a month on the trailer.

• Thread: 13/16 in x 16. Height 5.32 in, the long body.
• For GM marine engines, used on 4 cylinder, 8 cylinder and remote oil filter systems.
• Anti-drain-back valve to prevent dry starts.
• Epoxy coated heavy-wall steel canister so bilge corrosion does not work its way into the oil system.
• High efficiency media that meets or exceeds OE filtration.
• Sold individually or as a case of 12.

Measure your clearance before ordering the long filter. Sierra's short GM filter is 3.17 in, and on a tight engine bay that two inch difference is the whole decision.