Enginetech BC309J
Main bearing set for selected Ford and Mercury inline six engines, including 144 / 2.4 L, 170 / 2.8 L and 200 / 3.3 L units with a 7-main crankshaft layout.
Enginetech BC309J is a main bearing set for selected Ford and Mercury inline six engines. The set is intended for engines using a 7-main crankshaft support layout, so older blocks should not be assumed to fit by displacement alone.
Application / fitment
Typical use includes selected Ford / Mercury L6 144 / 2.4 L, 170 / 2.8 L and 200 / 3.3 L engines where the specific block uses seven main bearings. Enginetech catalog listings identify this set for engines described as “engines with 7 mains”.
- part type: main bearing set
- engine family: Ford / Mercury OHV L6
- typical displacements: 144 / 2.4 L, 170 / 2.8 L, 200 / 3.3 L
- fitment condition: 7-main block
Select the bearing size according to the actual crankshaft journal grind. Before installation, check journal diameters, thrust surface condition and required oil clearance.
Technical information
- type: main bearing set
- engine layout: inline 6-cylinder
- main bearing positions: 7
- typical bore family: 3.50" / 88.90 mm, 3.68" / 93.47 mm
- bearing size: according to product variant and crankshaft grind
- sale unit: 1 set