GM LS Rear Block Cover (Crankshaft Seal Housing)
Genuine GM · Part #12639250 · Engine / LS
Genuine GM (formerly ACDelco OE) LS-engine rear crankshaft seal housing / block cover.
- Part number
- 12639250
- Fits
- Wide range of GM LS-engine vehicles (Chevrolet, GMC, Buick, Cadillac), model years 1997–2020; rear crankshaft seal housing.
- AutoNation price
- Out of stock at AutoNation Parts — check current availability.
Shop this part at AutoNation Parts →
Before you order
- Confirm it fits with your VIN before buying.
Details on this page were taken from the live AutoNation Parts listing (https://www.autonationparts.com/parts/acdelco-ls-rear-block-cover-12639250) on 2026-07-12. Prices and availability can change — confirm on the retailer’s page before purchase. Vehicle fitment was cross-checked against PartsGeek(https://www.partsgeek.com/ss/?i=1&ssq=12639250).