Edelbrock · New
Edelbrock Olds Head Bolt Kit
MPN 8558 · Store SKU ede8558
Supplier stock checked 11/8/2026, 5:19:40 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
The Edelbrock #8558 bolt kit contain a complete set of the highest quality head bolts and hardened washers available. Cold-formed to ensure molecular integrity and heat treated prior to thread rolling and machining. Reduced diameter bolt heads eliminate the need for valve train removal to facilitate cylinder head re-torqueing. Hardened and parallel-ground washers are included. Rated at 170,000 p.s.i. Edelbrock #8558 is a Head Bolt Kit for 1965-76 Oldsmobile 400-425-455 Engines with 60529, 60515, 60519 Cylinder Heads. Complete set of Head Bolts & Washers for a pair of heads. OLDSMOBILE HEAD BOLT KIT Cylinder Head Bolt Kit
Manufacturer fitment & guides
- Oldsmobile:-:307 (5.0L)-403 (6.6L);Oldsmobile:-:400 (6.6L)-455 (7.5L)
- Oldsmobile:-:307 (5.0L)-403 (6.6L)
- Oldsmobile:-:400 (6.6L)-455 (7.5L)
- Manufacturer-supplied application summary from Turn14; this may not be an exhaustive fitment list.
Part-specific notes
- California Proposition 65: Y