Parts Catalog

Replacements
Home / Mercury / Mercury Marine [Updated: Apr. 10, 2026] / Inboard and TowSports / Diesel / 3.0L V6 VM / 3.0L VM 270 V6 IB / [70388501 & Up] - Cat.# 90-8M0137766 / Cylinder Block Timing Chain and Tension Rail

Cylinder Block Timing Chain and Tension Rail

Parts (8)

#Part NumberDescriptionQtyStatus
1 8M0129703 RAIL 1
2 8M0129748 SCREW 6
3 8M0129893 RING GEAR 2 superseded
4 8M0129733 TIMING CHAIN 2
5 8M0129734 TONE WHEEL 1
6 8M0129751 SCREW 2
7 8M0129889 GEAR 1
8 8M0129686 RAIL 2