Description
Comparison points and tradeoffs
When comparing Mikuni KHS-004 40mm Rubber Flange Adapter For Harley-Davidson Spigot-Type Carbs with other Spacers & Adapters options, use this source-backed detail as the primary discriminator: Category: Replacement Parts / Fuel System / Carburetors & Parts / Spacers & Adapters.
Use this second fact to evaluate the tradeoff: Mikuni rubber mounting flange origionally made for mounting HS40 carbs to Mikuni Harley Davidson manifolds but also has numerous general applications where the heavy duty construction has its advantages. For carbs with 43mm spigots and mounting to studs with 70-75mm stud centre to centre measurements. A third point to compare across alternatives is: Product identity: Mikuni KHS-004 40mm Rubber Flange Adapter For Harley-Davidson Spigot-Type Carbs.
Alternative-selection boundary
Choose an alternative when its stated identifiers, application, package, or specifications better match the requirement; no unverified competitor claim is introduced here.
Complete source-backed product details
Mikuni rubber mounting flange origionally made for mounting HS40 carbs to Mikuni Harley Davidson manifolds but also has numerous general applications where the heavy duty construction has its advantages. For carbs with 43mm spigots and mounting to studs with 70-75mm stud centre to centre measurements.
Source product highlights
About this item
- Mikuni Rubber flange for mounting HS40 to Mikuni Shovelhead or other Harley Davidson 2 bolt manifolds




Worth –
ethanol in gas suspect in this part failing within 6 months. bulged out and will not seal/hold carb in place.
cp –
says mikuni on the listing, on the invoice but on the product? Nope, made in taiwan. seems to be good item but the brand is a bit misleading.Super well packaged, arrived on time.