KPMI Black Diamond Intake Valve 20-4294 for Harley-Davidson Shovelhead 74 1966-1977
$54.00
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KPMI Black Diamond Intake Valve 20-4294 for Harley-Davidson Shovelhead 74 1966-1977
$54.00
Upgrade your Harley-Davidson engine with the precision-engineered KPMI Black Diamond intake valve. Crafted from high-strength one-piece forged stainless steel, each valve undergoes a specialised German treatment process that penetrates to a depth of 0.05 mm to significantly reduce friction, enhance wear resistance, and resist corrosion far better than traditional chrome or nickel electrolysis plating.
Designed using Finite Element Analysis software and rigorously tested on computerized flow benches, this intake valve delivers optimal airflow characteristics and lightweight durability. It features a standard head diameter of 49.53 mm, a 9.6 mm large stem, and a 23° tulip angle to ensure exceptional reliability for your classic Shovelhead engine.
Key Features
| Brand | KPMI |
| Product Type | Intake Valve |
| Material | Black Diamond™ Stainless Steel |
| Coating | Black Nitroneg |
| Head Diameter | 49.53 mm |
| Stem Diameter | 9.6 mm |
| Overall Length | 98.7 mm |
| Tulip Angle | 23º |
| Quantity | Pack of 1 |
| Weight | 104 g |
| OEM Reference Number | 18075-8 |
Highlights
- One-piece forged stainless steel construction for high strength and lightweight performance
- Specialized Black Diamond treatment minimizes friction and improves wear resistance
- Tested via Finite Element Analysis and computerized flow bench testing for optimal flow
- Direct replacement for OEM part 18075-8
Compatibility
- Harley-Davidson Shovelhead 74" (1966–1977)
- Harley-Davidson Shovelhead 80" (1978–1983)
Frequently asked questions
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