KPMI +0.003 Cast Iron Exhaust Valve Guide - Harley Panhead & Shovelhead
About KPMI
Kibblewhite Precision Machining supplies valves, valve springs, guides and complete top-end kits used by professional V-twin engine builders. Its black diamond valves and spring kits are a standard specification on high-lift cam builds.
This KPMI cast iron exhaust valve guide is engineered for Harley Panhead and Shovelhead big-twin engines. It features a +0.003 inch oversize, making it an essential component for rebuilding cylinder heads with worn valve guide bores.
Why riders pick this
- Cast iron for robust, long-lasting performance
- +0.003 inch oversize for worn exhaust bores
- Direct replacement for Panhead and Shovelhead
- Helps restore proper valve stem clearance
When performing a top-end rebuild on your vintage Harley, addressing worn valve guides is critical for long-term performance. This KPMI +0.003 inch oversize cast iron exhaust valve guide ensures a precise fit in cylinder heads that require a larger bore due to wear. It's designed as a direct replacement, helping to restore proper valve stem-to-guide clearance and contributing to efficient engine operation and reduced oil consumption.
Built for Reliable Engine Performance
- Durable cast iron construction for lasting reliability
- +0.003 inch oversize to correct worn cylinder heads
- Specifically for exhaust valve positions
- Direct replacement for Panhead and Shovelhead models
The Right Start for Your Rebuild
Ensuring accurate valve guide installation is a precision job best handled by experienced hands or a qualified machine shop. This KPMI exhaust valve guide is a vital part of a comprehensive engine rebuild, providing the foundation for proper valve train function. By selecting the correct oversize, you ensure your Panhead or Shovelhead engine maintains optimal compression and power delivery for many more miles.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-2033C
- Type: Exhaust valve guide
- Material: Cast iron
- Oversize Specification: +0.003 in
- Length: 3.45 in
- Weight: 0.04 lbs
Common questions
What does +0.003 inch oversize mean for this valve guide?
The guide bore is 0.003 inches larger than the stock size. This is for cylinder heads where the original valve guide bore has worn larger and requires machining to this oversize spec for a precise, tight fit.
Do I need to replace both exhaust and intake guides?
It depends on the wear in your specific engine. It's wise to inspect both. KPMI manufactures separate part numbers for intake and exhaust guides, so ensure you order the correct ones for each position if both are needed.
Can I install this valve guide myself?
Valve guide installation typically requires specialized tools, such as a press and reaming tools, to ensure proper fit and alignment. Most riders have a qualified machine shop or an experienced engine builder perform this work.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | KPMI |
| TYPE | Engine |
| SKU | 191-57020C |
| WEIGHT | 0.04 lb |
