106-3948 Cast iron valve guide in/ex. +.002"
Fits: 36-47 Knucklehead; Knuckles with S&…
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Specifications
- Brand
- S&S
- Part Number
- 106-3948
- OEM Reference
- 18187-40
- Pack Quantity
- Each
- Category
- Valve Guides Intake/exhaust
- VAT Rate
- 20%
About This Product
Machined from cast iron, this S&S Cycle intake and exhaust valve guide is sized at +0.002 inch outer diameter to suit S&S KN and Flathead Power valve spring covers on 1936–1947 Harley-Davidson Knucklehead engines, as well as standard Knucklehead and S&S KN engine applications. Replaces OEM part 18187-40 (formerly 167-408). Correct fitment ensures proper valve alignment and long service life during engine rebuilds.
Manufacturer part number: 106-3948.
Fitment
36-47 Knucklehead; Knuckles with S&S valve spring covers; S&S KN engines
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