Dorman’s thoughtful exhaust manifold redesigns put an end to comebacks
Dorman knows exhaust manifold replacement is a higher stakes repair today than it used to be. Limited access, dissimilar head/manifold material metallurgy and downstream add-ons like manifold converters and turbochargers make the labor and cost of this job higher than ever. Look to Dorman for innovative design and material upgrades that provide better-than-stock longevity, like our stainless manifold mounting hardware kits, specialized ceramic coatings on select applications, and reinforced casting ribs on manifolds we know are prone to breaking.
Upgraded material
674-522 General Motors 2020-99
PROBLEM: Thermal cycling on General Motors vehicles pow- ered by LS engines can cause some manifolds to warp and others to crack. Milling and welding damaged manifolds aren’t reliable repair options given the high labor times involved on many of these cars and trucks. FIX: Dorman’s OE FIX driver’s side exhaust manifold is made of nodular cast iron, a better class of iron than the OE alloy. Dorman manifolds manufactured from this upgraded material have superior fatigue resistance to help ensure longer life and leak-free exhausts.
Dorman Products, Inc. | ©2024 No reproduction in whole or part without written approval. Exhaust-Manifold-Catalog-Ad_AWI_DOR1450313828
©2025 Auto-Wares Inc. Special prices limited to quantities on hand. Not responsible for errors in price or description. Some products may not be exactly as shown. Where a product is not available, products of equal or lesser value may be substituted.
2ndQtr25_Pros.indd 12
4/9/25 10:53 AM
Made with FlippingBook flipbook maker