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Oil Filter Sandwich Adapter

Quick Overview

Flex-a-lite® sandwich adapter with 18mm 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 most Buick L4 & V6, most Oldsmobile, some Pontiac, metric Cadillac, Chevy: all V6 and most 4cyl., some Isuzu, Jeep V6, metric AMC, Saab V6.

  • 18x1.5mm thread
  • 1 5/8-inch thick adapter
  • 2 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 107191
Legacy Model Number 3962
Model 1, 2, 3 Class C Motorhomes, Astre, Astro, Aveo, Beretta/Corsica, Blazer ZR2, Bravada, Camaro, Caprice, Cherokee, Comanche, Concord, Corsica, Custom Cruiser, Cutlass 442, Cutlass 448, Cutlass Cruiser, Cutlass Supreme, Delta 88, Delta 89, Eagle, Eldorado, Electra, Estate Wagon, Firebird, Fleetwood 75, Fleetwood Coupe, Grand Am, Grand Prix, Hombre, Impala, LaSalle Series 50, LeMans, LeSabre, Lucerne CXS, Lumina, Luv, Malibu, Mini Vans, Monte Carlo, Monza, Omega, Phoenix, Pickup, Regal, Riviera, Roadmaster, S10, S15, Safari, Sedan, Sedan Seville, Seville, Skyhawk, Spirit, Starfire, Sunbird, SX-6, SX-7, Trans Am, Trooper, Venture
Fitment Notes No
Displacement CID 110, 121, 134, 138, 140, 146, 150, 151, 151 w/AC, 151 w/HD Clutch, 151w/5" fan clutch, 151w/HD Clutch, 173, 173w/5"clutch, 173w/HD clutch, 189, 191, 196, 204, 207, 229, 231, 231 w/AC, 231 w/o AC, 231w/o AC, 232, 250, 252, 258, 260, 261, 262, 262 w/HD clutch, 262 w/std clutch, 265, 265 w/AC, 307, 331, 350, 403, 425, 98