Mahle MIS16259WB Engine Intake Manifold Gasket Set

Engine Intake Manifold Gasket Set for GM V6 Applications

Mahle MIS16259WB is an OEM-standard engine intake manifold gasket set built for sealing service on select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. It uses molded rubber intake manifold and plenum gasket materials to support a reliable seal at the intake tract and related sealing points.

Fits 1996-2005 Buick Century, Buick Rendezvous, Chevrolet Impala, Chevrolet Monte Carlo, Pontiac Aztek, Pontiac Grand Am, Pontiac Montana, Oldsmobile Alero, Oldsmobile Silhouette, Chevrolet Malibu, Pontiac Grand Prix, Chevrolet Lumina, Oldsmobile Cutlass, Pontiac Trans Sport, and Chevrolet Lumina APV, N/A.

• OEM-standard intake manifold gasket set for engine sealing service
• Molded rubber intake manifold gasket material for consistent sealing surfaces
• Molded rubber plenum gasket included
• Includes bolts and miscellaneous gaskets and seals for related intake service
• Built for select GM passenger cars and minivans with confirmed fitment

Detailed Product Overview

Mahle MIS16259WB is an intake manifold gasket set for GM vehicles that need intake and upper-engine sealing service. The set is specified with molded rubber intake manifold gasket material and molded rubber plenum gasket material, and it is listed as OEM standard for applications where factory-style sealing performance matters. This part cross-references FEL-PRO MIK98003T for the same application. Common search terms for this part include intake manifold gasket set for 2000-2005 Buick Century, intake manifold gasket set for 2000-2005 Chevrolet Impala, and intake manifold gasket set for 1999-2005 Pontiac Grand Am.

Common Problems This Part Addresses

• Intake manifold vacuum leaks
• Coolant or oil seepage at intake sealing surfaces
• Rough idle caused by intake gasket failure
• Upper-engine sealing issues after manifold service
• Air leaks affecting drivability on GM V6 platforms

Installation Notes and Tips

Clean all mating surfaces thoroughly before installation and inspect the intake manifold, plenum, and valve cover sealing areas for damage or warpage. Follow the vehicle service procedure for torque sequence and torque values, and replace any worn fasteners or seals during reassembly when specified by the repair process. Verify engine and model-year fitment against the vehicle before installation. Search phrases such as Mahle MIS16259WB intake manifold gasket set and MIS16259WB Buick Century Chevrolet Impala Pontiac Grand Prix help narrow the correct application.

Quality Assurance

MAHLE gaskets are used by OEMs and technicians worldwide for engine sealing applications. MIS16259WB is built to OEM-standard expectations for fit and sealing performance in the listed Buick, Chevrolet, Oldsmobile, and Pontiac applications.