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Home > Exhaust Manifold for Buick LaCrosse Regal Verano Chevy Malibu, Compatible with Dorman 674-937 | SPELAB
Coated cast iron four-runner exhaust manifold for Buick LaCrosse, Regal, and Verano and Chevrolet Malibu with a band clamp, a four-port gasket, six flange nuts, and a ring seal, compatible with Dorman 674-937
Threaded oxygen-sensor boss and machined collector flange on the back of a coated cast iron exhaust manifold for Buick and Chevrolet engines
Machined four-port head-gasket faces on a coated cast iron exhaust manifold for Buick LaCrosse, Regal, and Verano and Chevrolet Malibu
Triangular three-bolt collector outlet flange of a coated cast iron exhaust manifold for Buick and Chevrolet four-cylinder engines
Included hardware for the Buick and Chevrolet exhaust manifold: a black four-port gasket, six gold flange nuts, and a steel ring seal
Coated cast iron four-runner exhaust manifold for Buick LaCrosse, Regal, and Verano and Chevrolet Malibu with a band clamp, a four-port gasket, six flange nuts, and a ring seal, compatible with Dorman 674-937
Threaded oxygen-sensor boss and machined collector flange on the back of a coated cast iron exhaust manifold for Buick and Chevrolet engines
Machined four-port head-gasket faces on a coated cast iron exhaust manifold for Buick LaCrosse, Regal, and Verano and Chevrolet Malibu
Triangular three-bolt collector outlet flange of a coated cast iron exhaust manifold for Buick and Chevrolet four-cylinder engines
Included hardware for the Buick and Chevrolet exhaust manifold: a black four-port gasket, six gold flange nuts, and a steel ring seal

Exhaust Manifold for Buick LaCrosse Regal Verano Chevy Malibu, Compatible with Dorman 674-937 | SPELAB

$103.99
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Description Fitment & Specs FAQs

For compatible Buick, Chevrolet, Pontiac, and Saturn vehicles with cold-start ticking, soot deposits, or exhaust odor, this SPELAB stainless steel manifold provides a repair-focused replacement for restoring a properly sealed exhaust path.

This product is commonly cross-referenced with Dorman 674-937 and OE numbers 101551, 663432, 12615133, 12630741, and 12643496. These numbers are fitment references only; this is not a Dorman-branded product.

Key Features and Benefits

  • Compatible with the applications in the fitment table
  • Stainless steel tubular construction
  • Listed equal-length runners and mandrel-bent pipes
  • Hydraulic-pressed, chrome-plated flanges
  • TIG-welded joints
  • Installation accessories included according to the listing; verify package contents

Best For

  • Buick LaCrosse, Regal, Verano, and Allure repairs
  • Chevrolet Malibu, Impala, and Orlando repairs
  • Pontiac G6 and Saturn Aura owners
  • High-mileage commuter and family vehicles
  • Confirmed manifold or manifold-gasket leaks

Factory-Style Manifold vs. SPELAB Stainless Manifold vs. Custom Header

A factory-style part suits a stock repair, this SPELAB manifold provides a tubular stainless steel replacement, and a custom header is generally reserved for modified projects. This product is a repair-focused part rather than a guaranteed horsepower upgrade.

Why Replace Your GM Exhaust Manifold?

Replacement can address ticking, soot, or exhaust odor when a cracked, warped, corroded, or leaking manifold is the confirmed cause. Similar symptoms can also come from gaskets, hardware, oxygen sensors, or other exhaust components.

Built for GM Daily Drivers and High-Mileage Family Cars

The primary objective is dependable exhaust sealing and normal daily drivability rather than aggressive sound or racing performance.

What Makes This Application Different?

Confirm the engine and emissions configuration because the same model and year can use different exhaust components.