Keep hot exhaust sealed at the cylinder head with the MR. GASKET exhaust manifold gasket set 5904, an Ultra-Seal exhaust gasket set built for Chevrolet Small Block Gen I engines. It fits many vehicles, among them the 1988-1995 Chevrolet C1500 with the V8-5.0L or V8-5.7L and the 1959-1985 Chevrolet Impala with the V8-4.6L, V8-5.0L, V8-5.3L, V8-5.4L, V8-5.7L or V8-6.6L. See the "Vehicles it fits" section for the full list.
- Graphite-impregnated facing: Offers heat resistance and thermal conductivity to carry heat away from the cylinder head. It also conforms to and seals minor surface irregularities.
- Expanded metal core: Provides stability, torque retention and tensile strength.
- High-recovery material: Designed to help keep the header or manifold flange sealed if the flange loses clamp load.
- Trimmable and anti-stick: Can be cut for modified port applications if needed, and its anti-stick properties allow easy removal at disassembly.
The ports are round and measure 1.930 in., and gasket thickness is 0.062 in. The listed applications use one set. Collector gaskets are not included. The set is built to resist cracking and deterioration and to withstand intense heat. It is intended for original equipment replacement, high-performance street, drag race and oval track use. Listed engines: V8-4.3L, V8-4.6L, V8-5.0L, V8-5.3L, V8-5.4L, V8-5.7L, V8-6.6L and V8-7.4L. Country of origin: United States.
Signs an exhaust manifold gasket may need replacing include a ticking or tapping noise near the manifold, exhaust odor in the engine bay, or soot at the flange joint. Diagnose the leak source before replacing parts.
Interchange: 1407
Frequently Asked Questions
What engines does Mr. Gasket 5904 fit?
It is made for Chevrolet Small Block Gen I engines, with listed engine codes from V8-4.3L through V8-7.4L. See the "Vehicles it fits" section for every year, make, model and engine.
What is the port shape and size?
The ports are round and measure 1.930 in., and the gasket is 0.062 in. thick. It can be trimmed if needed for modified port applications.
Are collector gaskets included?
No. Collector gaskets are not included with this set, so source them separately if your job requires them.
Can this gasket set be used in racing applications?
Mr. Gasket lists this Ultra-Seal set for original equipment replacement, high-performance street, drag race and oval track use.
What are signs an exhaust manifold gasket may need replacing?
Common signs include a ticking noise near the manifold, exhaust odor under the hood, or soot at the flange. Other faults can cause similar symptoms, so confirm the leak source first.
