Pre-assembled mounting kit will save time hunting for parts.
Sierra packages the required gaskets, studs, and fasteners needed to install an exhaust elbow to simplify the process of gathering parts. These kits eliminate the time to research and source individual parts and let you focus on assembling the exhaust system. Each component is engineered to meet or exceed manufacturer’s specifications to ensure the proper fit and function. Do-it-yourselfers and technicians will appreciate the having to spend less time gathering parts by using a Sierra pre-assembled kit.
Key Features
- Meets or exceeds OEM specifications
- Sold as a kit for a single riser
- Fits GM based 229 and 262 V6, Small Block (305 and 350)V8 engines and Big Block (454) V8 engines
- Compatible with Sierra p/n
- 18-1976-1 elbow
- 18-1957-1 manifold
- 18-1953-2 manifold
- 18-1952-1 manifold
- 18-1908K manifold riser spacer kit
- 18-1908 manifold riser spacer
18-8555 Application Guide
| Application | OEM Part Numbers |
|---|---|
| GLM | 53430 |
| Mallory | 9-40583 |
| Osco | 3320-MK-X |
The Sierra Engine Parts Selector
In addition to gasket kits, we offer a wide variety of other engine parts manufactured by Sierra. To see if we have the part you need, see our Engine Parts Selector, where you can search by engine make, serial number and model or year of manufacture.







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