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 1939–1940 Pontiac Deluxe Series 28, 1937 Pontiac Deluxe Model 8CA, 1938 Pontiac Deluxe Model 8DA and 1940 Pontiac Torpedo Series 29.

• Includes: 5 × Main Bearing
• Engine: 249 cid (4.1L) L8
• Bearing Size: 0.040 in undersize
• Fitment Notes: Intended for 249 cid (4.1L) L8 engines; the crankshaft journals must be machined to 0.040 in undersize