Riser T-20970

Replaces Part Numbers

• MerCruiser 98503 and 98504
• Barr: MC-20-98504
• Sierra: 18-1970-1

Fits Models:  185, 200, 205, 228, 230, 260, 330, 340, 898 and 7.4L 

Used on:

• GM V6 229 and 262 cu.in
• GM Small Block V8 305-350 cu.in.
• GM Big Block V8 454 cu.in.

Used with

• Manifold: T-20952, T-20953, T-20957
• Mounting Kit: 28503-MK

Backed by a 3 Year Warranty 

Mounting Hardware and Gasket Not Included