COMP Cams
COMP Cams 1.580 Spring Seat Cutter 4720CPG
COMP Cams 1.580 Spring Seat Cutter 4720CPG
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- Tracking emailed when it ships
- Free fitment check before you order
CCA Tools
Engine Valve Seat Cutter
Cuts spring seat to 1.580" O.D.; Cuts guide to .630"; Other seat cutters available in many sizes from 1.350" to 1.810" O.D.
Most high performance engines today require the use of larger-than-stock diameter valve springs. This 1.580" Spring Seat Cutter from COMP Cams will allow the engine builder to machine the cylinder head to the proper size for your spring. Each cutter requires the use of an arbor/pilot, which are available in three different sizes.
COMP Cams 1.580" Spring Seat Cutter, .630" Guide

COMP Cams interior part: what to know
Seats, mats and covers wear with daily use and are easy to refresh.
Fitment notes
- Specs, lead time and warranty come from COMP Cams and can change. The details above this guide are the latest we have.
Not sure it fits? Tell us exactly what you drive and we'll confirm fitment first. It's free and saves a return.
Ask about fitmentWhat else to plan for
- Mounting brackets. Seats often need vehicle-specific brackets.
More for your car: Interior