KPMI Valve Guide - IN / EX Std. Cast Iron HD Evolution 1987-1999 — Harley-Davidson (1984-2004)
KPMI cast iron valve guide for Harley Evolution engines, 1987-1999. Direct replacement for intake and exhaust positions to restore proper valve sealing and reduce oil consumption.
Features
- Cast iron construction
- Fits intake and exhaust positions
- Standard size specification
- Direct OEM replacement
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-4320C
- Material: Cast iron
- Length: 0.75 in
- Width: 3.55 in
- Height: 0.65 in
- Weight: 0.1 lbs
Fitment
Fits Harley-Davidson Evolution engines, 1987-1999, in both intake and exhaust valve positions.
Frequently Asked Questions
Will this fit my 2000+ Harley Twin Cam?
No — this guide is specific to Evolution engines only. Twin Cam models 2000 and newer require a different part number.
Does this guide work for both intake and exhaust valves?
Yes — this standard size guide fits both intake and exhaust valve positions in Evolution heads.
What's the benefit of replacing a worn valve guide?
A new guide restores proper valve sealing, reduces oil consumption, and improves overall engine efficiency and compression.
Is installation a DIY job?
Valve guide replacement requires cylinder head removal and specialized press tooling — best performed by a qualified engine builder or machine shop.
| BRAND | KPMI |
| TYPE | Engine |
| SKU | 191-57003C |
| WEIGHT | 0.1 lb |
