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Filter Adapter 13/16"-16 to 1 1/8"-16
This is lower profile than the competition which makes installation easier given the length of the larger oil filter.
This Duramax Oil Filter Adapter allows you to run a larger oil filter on your Duramax like a CAT 1R-1807 or AGCO: AG121853, BALDWIN: B7225, B7700, CARQUEST: 84791, CATERPILLAR: 1R1807, FLEETGUARD: LF3973, FRAM: PH9376, PH9376FP, LUBER-FINER: LFP3236, MACK: 20539275, 2191P551807, 485GB3236, NAPA: 7791, VMC: LF551807, VOLVO: 478736, 85114049. Simply remove the old nipple from your filter housing and replace it with this one. Please make sure to check the oil level in the truck as a larger oil filter will require more oil in your engine! All that is required to install is a 1/2" drive ratchet.