Sierra 18-0604 Exhaust Manifold Gasket Set - GM 305-350 CID Engines

The Sierra 18-0604 Exhaust Manifold Gasket Set is a replacement gasket kit for GM 305-350 CID marine engines, designed for use with exhaust manifold 18-1997-1. The set contains two exhaust elbow gaskets and two 18-2949 exhaust manifold gaskets, giving you the seals needed to reseat the manifold and elbow assembly during a rebuild or gasket replacement. The gaskets are white in color and are built to meet or exceed the specifications of the original equipment parts they replace, making them a reliable choice when servicing a GM small block V8 marine exhaust system. Because exhaust manifold gaskets are subject to constant heat cycling and exposure to exhaust gases and cooling water, replacing them with a properly sized, purpose-built set like the 18-0604 helps prevent water intrusion, exhaust leaks, and manifold corrosion. This gasket set is interchangeable with GLM 39910, so it can be used as a direct swap wherever that number is called for. Whether you are pulling a manifold for inspection, replacing a leaking gasket, or performing routine maintenance on a GM 305-350 CID marine engine, the 18-0604 set provides the correct gaskets for the job in one package.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-0604
• Product Type: Exhaust Manifold Gasket Set
• Fitment: GM 305-350 CID Engines
• Use With Manifold: 18-1997-1
• Included Components: (2) Exhaust Elbow Gaskets, (2) 18-2949 Exhaust Manifold Gaskets
• Interchangeable With: GLM 39910
• Color: White
• UPC: 808282242787
• Weight: 0.37 pounds

Fitment

• GM 305-350 CID Engines
• Use with Manifold: 18-1997-1

Replaces (OEM)

• GLM 39910

Frequently Asked Questions

What engines does the Sierra 18-0604 exhaust manifold gasket set fit? The 18-0604 gasket set is designed for GM 305-350 CID marine engines and is used with exhaust manifold 18-1997-1.

Is the Sierra 18-0604 interchangeable with any other part numbers? Yes, the Sierra 18-0604 exhaust manifold gasket set is interchangeable with GLM 39910.

What is included in the 18-0604 gasket set? Two exhaust elbow gaskets and two 18-2949 exhaust manifold gaskets are included in the Sierra 18-0604 set.

Which manifold does the 18-0604 gasket set pair with? This gasket set is used with exhaust manifold 18-1997-1 on GM 305-350 CID engines.

What color are the gaskets in the Sierra 18-0604 set? The gaskets in the 18-0604 set are white.

How much does the Sierra 18-0604 gasket set weigh? The Sierra 18-0604 exhaust manifold gasket set weighs 0.37 pounds.

Does the Sierra 18-0604 meet OEM specifications? Sierra states that the 18-0604 gasket set meets or exceeds the original equipment part it replaces.

How many exhaust elbow gaskets come in the 18-0604 set? The set includes two exhaust elbow gaskets along with two 18-2949 exhaust manifold gaskets.

Do I need a separate mounting kit to install the 18-0604 gasket set? The 18-0604 gasket set itself does not include a mounting kit; the manifold it pairs with, 18-1997-1, uses mounting kit 18-8536 with its own manifold gasket and bolts.

What is the UPC for the Sierra 18-0604 gasket set? The UPC for the Sierra 18-0604 exhaust manifold gasket set is 808282242787.