Sierra Exhaust Flapper 5-6 Inch 18-4458 9-44002 89260

Includes:
- Exhaust Flapper

Fits Models:
- GMC Sierra
- Chevrolet Silverado

Model Years:
- Check fitment before purchase

Submodels:
- Common trims include WT, SLE, SLT, Denali, and High Country
- Chassis codes: GMT900, GMT K2XX
- Body styles: Crew Cab, Double Cab, Regular Cab

Engine Options:
- Common engine sizes include 4.3L V6, 5.3L V8, 6.0L V8, 6.2L V8
- Engine codes: L83, L86, L8T, LY6

Description:
This exhaust flapper is designed for GMC Sierra and Chevrolet Silverado models, providing an essential component for exhaust flow management. It ensures optimal performance and sound control, enhancing your vehicle's exhaust system efficiency.

Features:
- Direct replacement for factory flapper
- Durable construction for long-lasting use
- Easy installation with no modifications required
- Compatible with various engine options
- Designed for specific GMC and Chevrolet models

Part Numbers: 18-4458, 9-44002, 89260