The Enginetech SS339 is a precision-machined stainless steel rear crankshaft repair sleeve that restores a worn rear main seal journal on the crankshaft. Fits 1980-1993 American Motors/Buick/Chevrolet/GMC 2.5L applications.
Important Notes
- Function: when the crankshaft rear main seal journal has been worn, grooved, or scored from years of seal contact, this sleeve presses over the damaged area to provide a fresh stainless steel surface for the existing seal to ride on - eliminating a leak-prone journal without replacing the crankshaft.
- Precision-engineered from stainless steel for hardness, dimensional stability, and a lower coefficient of friction than the original machined crank surface in many applications.
- Use with the existing rear main seal - replacing the seal is not required unless the seal itself is damaged. The repair sleeve provides a fresh sealing surface that the seal lip runs against.
- Installation: clean the crank journal, apply the included sealant (or Loctite 620) to the sleeve inside diameter, and press the sleeve on using a proper installation driver. Do not hammer the sleeve directly; use a flat driver or a purpose-made installation tool for a straight, square press.
- Always verify the crankshaft journal diameter, seal type, and application year against the OE crank being serviced before ordering - journal dimensions vary between engine families and between production years within the same engine family.
Specifications
| Part Number | SS339 |
| Product Type | Rear Crankshaft Repair Sleeve |
| Material | Stainless Steel |
| Function | Rear main seal journal repair (use with existing seal) |
| Weight | 0.5 lbs |
| UPC | 707473101608 |
| Country of Origin | CA |
Vehicle Fitment
- 1980 Chevrolet Monza 2.5L 151ci I4 OHV [VIN:V]
- 1980 Pontiac Sunbird 2.5L 151ci I4 OHV [VIN:V]
- 1980-1981 Buick Skylark 2.5L 151ci I4 OHV [VIN:5]
- 1980-1981 Chevrolet Citation 2.5L 151ci I4 OHV [VIN:5]
- 1980-1982 American Motors Concord 2.5L 151ci I4 OHV [VIN:B]
- 1980-1982 American Motors Spirit 2.5L 151ci I4
- 1980-1982 Pontiac Phoenix 2.5L 151ci I4 OHV [VIN:5]
- 1980-1983 Jeep CJ5 2.5L 151ci I4 OHV
- 1980-1983 Jeep CJ7 2.5L 151ci I4 OHV
- 1980-1983 Jeep DJ5 2.5L 151ci I4 OHV
- 1981-1983 Jeep Scrambler 2.5L 151ci I4 OHV [VIN:B]
- 1982 Buick Century 2.5L 151ci I4 OHV [VIN:5]
- 1982-1983 Chevrolet Citation 2.5L 151ci I4 OHV [VIN:R]
- 1982-1984 Pontiac Phoenix 2.5L 151ci I4 OHV [VIN:R]
- 1982-1985 Buick Skylark 2.5L 151ci I4 OHV [VIN:R]
- 1982-1986 Pontiac Firebird 2.5L 151ci I4 OHV [VIN:2]
- 1982-1990 Chevrolet Celebrity 2.5L 151ci I4 OHV [VIN:R]
- 1982-1991 Pontiac 6000 2.5L 151ci I4 OHV [VIN:R]
- 1982-1992 Buick Century 2.5L 151ci I4 OHV [VIN:R]
- 1984-1985 Chevrolet Citation II 2.5L 151ci I4 OHV [VIN:R]
- ...and 17 additional applications
Enginetech Rear Crankshaft Repair Sleeves are precision-engineered stainless steel wear sleeves pressed over the rear main seal journal of the crankshaft to restore a smooth sealing surface on engines where the OE journal has been grooved, worn, or scored from years of seal contact. Instead of replacing the crankshaft, the repair sleeve slips over the worn area and provides a fresh, hardened bearing surface for the existing rear main seal to ride on - an economical rebuild solution with a lower coefficient of friction than the original crank surface in many cases. Always verify the crankshaft journal diameter and seal size against the sleeve specification before pressing it on, and follow Enginetech's installation procedure for a straight, square press to avoid distorting the sleeve or damaging the crank.
