Enginetech R37556-060 is a cast .060" oversize piston ring set for 1964-1990 Jeep, Buick, Oldsmobile, Pontiac 3.3L-4.2L 199-258ci I6 engines, sold as a complete set covering all cylinders.
Important Notes:
- Sized for cylinders bored .060 inch oversize. Verify your finished bore diameter with a precision gauge before ordering - rings sized for the wrong bore will not seal correctly.
- File-fit and gap each ring to the manufacturer's end-gap specification for your application before installation. Improper end gap causes blow-by or ring-end butting under heat.
- Replace piston rings as a complete set during any rebuild. One set covers all cylinders for the engine.
- Cast. 5/64 5/64 3/16.
| Part Number | R37556-060 |
| Grade | Cast |
| Bore Size | .060" Oversize |
| Ring Stack (Top/2nd/Oil) | 5/64 / 5/64 / 3/16 |
| Standard Bore Diameter | 3.750 in |
| Quantity | Complete set - covers all 6 cylinders |
| Engine | 3.3L-4.2L 199-258ci I6 |
| Year Range | 1964-1990 |
| Makes | American, Buick, International, Jeep, Oldsmobile, Pontiac |
| Country of Origin | US |
| OEM Cross-Refs | Hastings:656, FEL-PRO:E-222X, Perfect Circle:50668 |
Sold as a complete piston ring set - one set covers all cylinders and is required per engine.
Fitment:
- 1964-1964 Buick Sportwagon 3.7L 225ci V6
- 1964-1964 Oldsmobile F85 3.7L 225ci V6
- 1964-1965 American Motors American 3.8L 232ci I6
- 1964-1965 Oldsmobile F85 3.7L 225ci V6
- 1964-1965 Pontiac LeMans 3.5L 215ci I6
- 1964-1965 Pontiac Tempest 3.5L 215ci I6
- 1964-1966 American Motors Classic 3.8L 232ci I6
- 1964-1967 Buick Skylark 3.7L 225ci V6
- 1964-1967 Buick Special 3.7L 225ci V6
- 1965-1965 American Motors Ambassador 3.8L 232ci I6
- 1965-1965 American Motors American 3.8L 232ci I6
- 1965-1965 American Motors Classic 3.3L 199ci I6
- 1965-1965 American Motors Classic 3.8L 232ci I6
- 1965-1965 Jeep J-2500 3.8L 232ci I6
- 1965-1965 Jeep J-2600 3.8L 232ci I6
- 1965-1965 Jeep J-2800 3.8L 232ci I6
- 1965-1965 Jeep Wagoneer 3.8L 232ci I6
- 1965-1965 Oldsmobile F85 3.7L 225ci V6
- 1967-1967 American Motors Ambassador 3.8L 232ci I6
- 1965-1967 American Motors Marlin 3.8L 232ci I6
- 1966-1966 American Motors Classic 3.3L 199ci I6
- 1966-1966 American Motors Classic 3.8L 232ci I6
- 1966-1966 American Motors Marlin 3.8L 232ci I6
- 1966-1966 Jeep J-2500 3.8L 232ci I6
- 1966-1966 Jeep J-2600 3.8L 232ci I6
- 1966-1966 Jeep J-2700 3.8L 232ci I6
- 1966-1966 Jeep J-2800 3.8L 232ci I6
- 1966-1966 Jeep Wagoneer 3.8L 232ci I6
- 1966-1967 American Motors Ambassador 3.3L 199ci I6
- 1966-1967 American Motors Ambassador 3.8L 232ci I6
- ...and 118 additional applications
Enginetech piston ring sets are manufactured to OEM specifications and offered in both premium and cast grades to match the demands of stock rebuilds and moderate-performance builds. Each set is application-specific, with ring widths and end-gap characteristics matched to the bore and groove geometry of the engine family it serves. Ring sets are sold by bore size - standard for unmachined bores, with oversizes for blocks that have been bored and honed - so verify your finished bore diameter with a precision gauge before ordering, since rings sized for the wrong bore will not seal correctly. Always file-fit and gap each ring to the manufacturer's specification for your application, and replace rings as a complete set during any rebuild. Enginetech documents every set with the ring stack dimensions, bore size, and cross-references so the correct set reaches the bench the first time.
WARNING: This product can expose you to chemicals including lead and nickel, which are known to the State of California to cause cancer, birth defects, or other reproductive harm.
