Mahle MS16259P Engine Intake Manifold Gasket Set

Engine Intake Manifold Gasket Set for GM V6 Applications

The Mahle MS16259P engine intake manifold gasket set is built for sealing the intake manifold and plenum on a range of GM vehicles. It uses molded rubber intake manifold gasket material and includes a plenum gasket, throttle body gasket, O-rings, and RTV sealant for a complete reseal service.

Fits 1996-2005 Chevrolet Lumina APV, N/A; Fits 2000-2001 Chevrolet Lumina, N/A; Fits 1999-2003 Chevrolet Malibu, N/A; Fits 2000-2005 Chevrolet Monte Carlo, N/A; Fits 2000-2005 Chevrolet Impala, N/A; Fits 1996-2004 Oldsmobile Silhouette, N/A; Fits 1999-2004 Oldsmobile Alero, N/A; Fits 1999 Oldsmobile Cutlass, N/A; Fits 2000-2005 Pontiac Grand Prix, N/A; Fits 1996-1999 Pontiac Trans Sport, N/A; Fits 1999-2005 Pontiac Montana, N/A; Fits 2001-2005 Pontiac Aztek, N/A; Fits 1999-2005 Pontiac Grand Am, N/A; Fits 2002-2005 Buick Rendezvous, N/A; Fits 2000-2005 Buick Century, N/A.

• Molded rubber intake manifold gasket material for a precise sealing surface
• Plenum gasket included for intake system service
• Throttle body gasket and O-rings included for related sealing points
• Premium grade construction for engine intake manifold repair work
• Mahle sealing products are used by OEMs and technicians worldwide

Detailed Product Overview

Mahle MS16259P is an intake manifold gasket set for GM vehicles that need intake sealing service on the upper intake and plenum area. The molded rubber design helps maintain a consistent seal at the manifold interface, while the included plenum gasket, throttle body gasket, O-rings, and RTV sealant support a more complete repair. This part cross-references FEL-PRO MS 90565 for the same application.

Common vehicle 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. The Mahle MS16259P also cross-references General Motors OE numbers 12578124 and 89017279.

Common Problems This Part Can Address

• Intake manifold vacuum leaks
• Coolant or air leakage at the manifold sealing surface
• Rough idle caused by intake sealing failure
• Check engine light conditions related to unmetered air
• Throttle body or plenum sealing issues during intake service

Installation Notes and Tips

Clean the mating surfaces thoroughly before installation and inspect the intake manifold and plenum for warpage or damage. Follow the vehicle service procedure for torque sequence and curing steps, and use the included RTV sealant where specified by the repair manual. Manifold bolts are sold separately, so verify fastener condition before reassembly.

Quality Assurance

Mahle gaskets are engineered as premium sealing components and are trusted in OEM and technician service environments. The MS16259P is built to support reliable intake sealing on the listed Buick, Chevrolet, Oldsmobile, and Pontiac applications.