512840 O-ring intake manifold conversion kit
Fits: 40-48 74" Knucklehead; 48-54 74" Pa…
incl. VAT
Chapter members save 15% · Sign in for member pricing
Estimated delivery: 3–15 working days
Authorised
Iron City Dealer
14-Day Returns
Easy & hassle-free
Secure Checkout
256-bit encryption
Free UK Delivery
On orders over £100
Specifications
- Brand
- MCS
- Part Number
- 512840
- OEM Reference
- 512840
- Pack Quantity
- Sold as kit
- Category
- Manifolds Gaskets And Seals
- VAT Rate
- 20%
About This Product
MCS O-ring intake manifold conversion kit. Converts 1940 to 1954 1200cc Knucklehead and Panhead engines to the O-ring sealing system used from 1955 to 1965. The kit includes steel screw-in adapters for 1940 to 1948 74-inch Knuckleheads and 1948 to 1954 74-inch Panheads. It replaces the old brass nut and packing arrangement with an O-ring seal.
Manufacturer part number: 512840.
Fitment
40-48 74" Knucklehead; 48-54 74" Panhead
Related Products
View all →
More from MCS
View all →
Exhaust gasket set. 84-90/10-up style
Riser mount stud set, for OEM FXSTS Springer forks
Recessed trim rings. 4.5" spotlamp. Black wrinkle
XL isolator motor mount kit. Rear
58-84 FL style one-piece rear fender
FL headlamp housing set. Chrome
OEM style pullback risers, no top clamp. 4.5" rise. Chrome
Replacement cylinder 1000cc Sportster, front
Who are we? Leeds Harley-Davidson - Iron City Motorcycles
This product is fulfilled by Iron City Motorcycles, Leeds' authorised Harley-Davidson® dealer, serving the UK with a full range of Genuine Motorclothes®, dealer merchandise, and official Harley-Davidson parts & accessories — available for UK and international delivery.
From OEM Parts to retro lifestyle wear to aftermarket stockits we have what you need to keep you riding all year round.
Use our official OEM parts finder to browse our full Genuine Harley-Davidson® Parts and our associated approved aftermarket catalogues.