KPMI Red Viton Valve Stem Seal 4-Pack - Harley 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.
Keep your Harley Shovelhead engine sealed tight with KPMI Red Viton valve stem seals. This 4-pack is specifically designed to resist oil migration into the combustion chamber, a common issue that can lead to carbon buildup and reduced performance. Crafted for durability, these seals maintain integrity under sustained heat and combustion byproducts.
Why riders pick this
- High-temperature Viton construction for Shovelhead
- Prevents oil migration into the combustion chamber
- 4-pack for complete valve system maintenance
- Designed for maximum valve lift without leakage
These KPMI valve stem seals utilize Viton material, known for its exceptional resistance to high temperatures and petroleum products. This advanced construction ensures a reliable and long-lasting seal, crucial for preserving the efficiency and power output of your classic Shovelhead motor.
Durable Construction for Shovelhead Engines
- Viton material resists extreme temperatures and petroleum byproducts
- Effectively prevents oil from entering the combustion chamber
- Four-pack quantity for comprehensive valve servicing
- Designed to support maximum valve lift without compromise
Essential for Shovelhead Engine Longevity
Properly functioning valve stem seals are vital for preventing oil consumption and maintaining optimal combustion. Installing these KPMI seals is a key step in preserving the health and performance of your Harley Shovelhead, ensuring a cleaner running engine and consistent power. Always confirm fitment for your specific model year before purchase.
Specifications
- Brand: KPMI
- Manufacturer Part #: 71011-4
- Quantity: 4 per pack
- Length: 1.35 in
- Width: 3.6 in
- Height: 0.95 in
- Weight: 0.03 lbs
Common questions
How many seals are included in this KPMI pack?
This pack contains four valve stem seals, which is enough to service a complete Shovelhead engine.
Will these seals fit my Shovelhead from a different year range?
This specific part is designed for 1978-1983 Shovelhead engines. Later models may require different dimensions, so please confirm fitment for your exact year.
What makes Viton a better choice for valve stem seals than standard rubber?
Viton offers superior resistance to high heat and chemical degradation from combustion byproducts and oil, which helps prevent oil seepage that can cause carbon buildup and power loss.
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 | 191-37021 |
| WEIGHT | 0.03 lb |
