HomeExhaust > Gaskets and Sealing SystemsDynomax 36491 Exhaust Pipe Flange Gasket
Part #: 36491

Dynomax 36491 Exhaust Pipe Flange Gasket

⚙️ 8 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$12.27Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet and GMC, Silverado 2500 HD and Sierra 2500 HD
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Durable Exhaust Pipe Flange Gasket for Chevrolet and GMC Trucks

The Dynomax 36491 exhaust pipe flange gasket is designed to provide a reliable seal for exhaust systems on Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD models. Engineered with a graphoil composite material, this gasket ensures durability and effective sealing under high-temperature conditions.

  • Compatible with Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD
  • Constructed from premium graphoil composite material
  • 3-bolt style with 5.844 inch bolt hole center-to-center spacing
  • Port dimensions: 4.5 inches length and width for optimal fit
  • Thickness of 0.063 inches for secure sealing
  • Product grade: Premium for enhanced performance

Technical Specifications and Features

The Dynomax 36491 exhaust pipe flange gasket features a 3-bolt design with a bolt hole center-to-center measurement of 5.844 inches, ensuring precise alignment with exhaust flanges on compatible trucks. The gasket’s port measures 4.5 inches in both length and width, matching the exhaust pipe flange dimensions for a tight seal. Made from a graphoil composite, this gasket withstands high temperatures and resists exhaust gas leakage. With a thickness of 0.063 inches, it provides a balance between flexibility and durability, maintaining a secure seal over time.

Applications and Problem Solving

  • Prevents exhaust leaks between pipe flanges on Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD
  • Reduces noise caused by escaping exhaust gases
  • Helps maintain proper exhaust system backpressure for engine efficiency
  • Protects against corrosion and gasket degradation in high-heat environments
  • Ensures compliance with emissions standards by preventing leaks

Installation Notes and Tips

When installing the Dynomax 36491 exhaust pipe flange gasket, ensure that the mating surfaces are clean and free of debris or old gasket material. Align the gasket carefully with the 3-bolt flange holes, matching the 5.844 inch bolt hole center-to-center spacing. Tighten bolts evenly in a crisscross pattern to avoid warping the flange and to achieve an even seal. It is recommended to inspect the gasket periodically for signs of wear or damage, especially after extended use in harsh conditions.

Quality Assurance and Warranty

Dynomax exhaust gaskets are manufactured to meet stringent quality standards, using premium materials like graphoil composite for durability and heat resistance. The 36491 gasket is designed to provide consistent performance in demanding exhaust applications. While specific warranty details are not provided, Dynomax products typically adhere to industry standards for reliability and fitment, ensuring compatibility with Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD exhaust systems.

BrandDynomax
Part Number36491
Bolt Hole Center To Center 15.844 in.
ClassPW
MaterialGraphoil Composite
Port 1 Length4.500 in.
Port 1 Width4.500 in.
Product GradePremium
Style3 Bolt
Thickness0.063 in.
Total Part VIO0

This part fits 8 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2010ChevroletSilverado 2500 HD6.6LV8N/ADPF Back System
2010GMCSierra 2500 HD6.6LV8N/ADPF Back System
2009ChevroletSilverado 2500 HD6.6LV8N/ADPF Back System
2009GMCSierra 2500 HD6.6LV8N/ADPF Back System
2008ChevroletSilverado 2500 HD6.6LV8N/ADPF Back System
2008GMCSierra 2500 HD6.6LV8N/ADPF Back System
2007ChevroletSilverado 2500 HD6.6LV8N/ADPF Back System
2007GMCSierra 2500 HD6.6LV8N/ADPF Back System

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.