Build a strong foundation for your classic's engine rebuild with this replacement main bearing set. Designed to support the crankshaft and help reduce friction, these bearings help keep your classic's engine turning smoothly. This Main Bearing Set fits 1949 Pontiac Chieftain; 1948–1949 Pontiac Silver Streak; 1941–1942, 1946–1949 Pontiac Streamliner; 1941–1942, 1946–1948 Pontiac Torpedo.

• Includes: 5 × Main Bearing
• Engine: 249 cid (4.1L) L8
• Bearing Size: 0.040 in undersize
• Fitment Notes: For the 249 cid (4.1L) L8 engine; the 0.040 in undersize bearings suit crankshaft journals machined to 0.040 in undersize