Gaskets and Seals› Engine Gaskets and Seals
Mr. Gasket
Cylinder Head Dowel Pins Fits 1965-1997 Chevrolet 396-454 Big Block & 1997-2008 LS Based Engines Mr Gasket
SKU: M00S 4377
Easy — 1–2 hours
Description
Part #: 4377
Big Block Chevrolet tubular head dowel, .638/.639 inch o.d. (outer diameter) by 1/2 inch. Packaged two per set. These hard to find dowel pins are precision machined then case hardened for accurate alignment in engine assembly.
Fits 1965-1997 Chevrolet 396-454 Big Block & 1997-2008 LS Based Engines
MIA's Description
Fitment
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Specifications
| Brand | Mr. Gasket |
| Part Number | M00S 4377 |
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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