Exhaust adapter plate kit for 3.0 ltr GM engines.

This kit converts older GM 3.0 ltr. with large intake port exhaust manifolds to the new 3.0 ltr high output small intake port cylinder heads.

Use this adapter for example while repowering your older 3.0 ltr. engine with a newer 3.0 ltr. vortec engine (marineparts SKU: RECGM181) and you want to use your old engines exhaust manifold.

• Includes plate gaskets, and hardware for Mercruiser manifolds.
• Made in USA.