Moderate — 2–4 hours
Description
Part #: 4720CPG
Cuts cylinder head spring seats to 1.580" outer diameter / .630" inner diameter. Requires the use of an arbor/pilot, which are available for 5/16", 11/32" and 3/8" valve stem sizes.
This valve seat cutter allows you to enlarge the cylinder head spring pocket to 1.580" outer diameter while reducing the outer diameter of the valve guide to .630".
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
MIA's Description
Fitment
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Available on iOS & Android
Specifications
| Brand | COMP Cams |
| Part Number | C007 4720CPG |
Buy with Confidence
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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