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Oil Filter Sandwich Adapter

Quick Overview

Flex-a-lite® sandwich adapter with 13/16-inch thread.


This Flex-a-lite® sandwich adapter is used to add an oil filter to a vehicle that didn’t originally come with one. This application fits Chevy V8s with recessed spin on filter. (Not offered with pressure relief valve; these engines have built-in pressure relief valves.)

  • 13/16-inch x 16 thread
  • 2 ½-inch thick adapter
  • 3 ½-inch O-ring

WARNING: This product can expose you to chemicals, including lead and phthalates, known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to

Installation Instructions

PDF Install Instructions: 3961-3967 99797.pdf

Additional Information

SKU 108595
Legacy Model Number 3963
Model 1, 2, 3 Class C Motorhomes, Blazer, Blazer ZR2, Camaro, Caprice, Chevelle, Chevy II, Corvette, El Camino, Impala, Malibu, Monte Carlo, Monza, Nova, S10, Tahoe
Fitment Notes With 18" Fan,With 17" Fan,With HD Fan Clutch
Displacement CID 121 w/AT, 140, 151, 262, 267, 283, 302, 305, 305 w/HD clutch, 307, 327, 348, 350, 379, 379 Diesel, 395, 396, 400, 409, 427, 454