KPMI Engine Kit 20-22150 for Harley-Davidson Panhead 1948-1965
This comprehensive KPMI valvetrain engine kit provides all essential components required for a complete cylinder head overhaul in one package. Engineered with Black Diamond stainless steel valves featuring a Black Nitroneg coating and heat-treated steel retainers, it offers up to double the service life over standard OEM parts.
Designed specifically for 1948-1965 Harley-Davidson Panhead models, this kit delivers exceptional valvetrain stability up to 10.5 mm (0.415 in.) valve lift. It includes precision-engineered intake and exhaust components, complete valve spring kits, keepers, and necessary seals to streamline your engine rebuild.
Key Features
| Brand | KPMI |
| Manufacturer Part Number | 20-22150 |
| Product Type | Valvetrain Engine Kit |
| Valve Type | Intake / Exhaust |
| Valve Material | Black Diamond™ Stainless Steel |
| Coating | Black Nitroneg |
| Retainer Material | H.T. Steel |
| Valve Lift | 10.5 mm |
| Installed Height | 34.9 mm |
| Seat Pressure | 129 lb |
| Open Pressure | 272 lb |
| Intake Head Diameter | 44.45 mm |
| Intake Stem Diameter | 9.6 mm |
| Intake Tulip Angle | 23° |
| Intake Overall Length | 96.5 mm |
| Exhaust Head Diameter | 44.45 mm |
| Exhaust Stem Diameter | 9.6 mm |
| Exhaust Tulip Angle | 29° |
| Exhaust Overall Length | 97.0 mm |
| Remarks | Standard |
| Weight | 1.8 kg |
Highlights
- Complete cylinder head overhaul package
- Up to double the service life compared to OEM valvetrain parts
- Includes Black Diamond stainless steel intake and exhaust valves with Black Nitroneg coating
- Heat-treated steel retainers engineered for up to 10.5 mm valve lift
Compatibility
Compatible with 1948–1965 Harley-Davidson Panhead engine models.
What's included
- KPMI® complete Valve Spring Kit that meets or exceeds OEM specifications
- Seals (where applicable)
- Keeper (where applicable)
- KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
Frequently asked questions
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