Cometic, FR/RR cylinder base gasket set. .020" fibre

Type 'B'. 0.020" thick fibre, premium high-temperature, high-density, creep-resistant material that requires no re-torquing or additional sealants, petrol resistant and asbestos-free. OEM replacement reference 16774-86D, 16789-04.
Explanation of 'type A' (early style) and 'type B' (late style) gaskets: There are 2 types of cylinder base gaskets available for Evolution models. For convenience, we call them 'type A' (early) and 'type B' (late).
* The 'Type A' gasket was introduced on the 1984 Evolution Big Twin models, and can be used on all 84-99 Evo 1340cc models, fitting perfectly to the contour of the cylinder base. It fits 86-22 Evo XL models, but protrudes at the cylinder base. This can be a problem with silicone-beaded base gaskets.
* The 'Type B' gasket was introduced on Evolution XL Sportster models in 1986, and fits all Evo XL models, as well as all 84-99 Evo 1340cc models, although the Big Twin cylinder base is slightly larger than the gasket.
The 'type B' is the only gasket type 'The Factory' supplied from 1986 onwards for both the Evo Big Twin and the Evo XL Sportster models.
Both the 'A' and 'B' type gaskets have an identical inner diameter, oil hole location and bolt holes. The gaskets for the front and rear cylinder are identical. The only difference between the 'A' and 'B' gaskets is the outer perimeter.


Specifications


Brand
Cometic


Application
84-99 Evo Big Twin; 88-22 XL Sportster1200 (Excl. 08-12 XR1200) (NU)


OEM
16774-86D, 16789-04


Sales unit
Pack of 2 pcs


Material
Fiberglass


Diameter
0.02 inch


Packaging weight
0.023 kg


HS Code
84849000


Motorcycle family
BIG TWIN, DYNA, FX, FXR, SOFTAIL, SPORTSTER, TOURING


Original name
Cometic, cylinder base gasket set FR/RR. .020" fibre