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Mahle GS33729 Engine Water Pump O-RingOE Quality 60-Day Returns
Part #: GS33729

Mahle GS33729 Engine Water Pump O-Ring

⚙️ 35 vehicles fit this part
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✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, Geo, and Toyota, Corolla, MR2, Nova, Prizm, and Tercel
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Engine Water Pump O-Ring Seal

The Mahle GS33729 is an engine water pump O-ring set for select Toyota, Geo, and Chevrolet applications. It is a rubber sealing solution used to maintain a tight coolant seal at the water pump interface, helping support reliable cooling-system operation.

Key Features

  • Engine water pump O-ring set
  • Rubber construction
  • Contains 2 O-rings, priced as a set
  • Mahle sealing product for OE-style service work
  • Cross-references FEL-PRO ES 72073 for the same application

Detailed Description

Mahle GS33729 is a replacement water pump O-ring set built for sealing the coolant passage at the engine water pump. Mahle gaskets and sealing products are used by OEMs and technicians worldwide, and this part follows that focus on dependable sealing performance. This part number is commonly searched as Mahle GS33729 and GS33729 for Toyota Corolla, Toyota Tercel, Toyota MR2, Geo Prizm, and Chevrolet Nova service applications.

Compatible With: Fits 1983-1991 Toyota Corolla, N/A; Fits 1980-1988 Toyota Tercel, N/A; Fits 1985-1988 Toyota MR2, N/A; Fits 1989-1997 Geo Prizm, N/A; Fits 1985-1988 Chevrolet Nova, N/A.

Common Problems It May Address

  • Coolant seepage at the water pump sealing surface
  • Leakage after water pump service
  • Damaged or flattened original O-rings
  • Loss of seal integrity in the cooling system
  • Repeat coolant leaks during maintenance on Toyota Corolla and Toyota Tercel applications

Installation Notes and Tips

Replace the O-rings whenever the water pump is removed or serviced. Clean the sealing surfaces thoroughly before installation and verify the old gasket material or residue is fully removed. Confirm the application by year, make, and model before ordering; this GS33729 set is listed for specific Toyota, Geo, and Chevrolet vehicles only.

Quality Assurance

Mahle sealing products are supplied with the engineering focus expected in OEM and professional repair environments. This GS33729 water pump O-ring set is built as a direct sealing replacement for the listed applications.

This part fits 35 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1997GeoPrizm1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1996GeoPrizm1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1995GeoPrizm1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1994GeoPrizm1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1993GeoPrizm1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1992GeoPrizm1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1991GeoPrizm1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1991ToyotaCorolla1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1990GeoPrizm1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1990ToyotaCorolla1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1989GeoPrizm1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1989ToyotaCorolla1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1988ChevroletNova1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1988ToyotaCorolla1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1988ToyotaMR21.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1988ToyotaTercel1.5LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1987ChevroletNova1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1987ToyotaCorolla1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1987ToyotaMR21.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1987ToyotaTercel1.5LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1986ChevroletNova1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1986ToyotaCorolla1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1986ToyotaMR21.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1986ToyotaTercel1.5LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1985ChevroletNova1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1985ToyotaCorolla1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1985ToyotaMR21.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1985ToyotaTercel1.5LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1984ToyotaCorolla1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1984ToyotaTercel1.5LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1983ToyotaCorolla1.6LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1983ToyotaTercel1.5LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1982ToyotaTercel1.5LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1981ToyotaTercel1.5LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber
1980ToyotaTercel1.5LL4N/AO-ring Type; Contains 2, Priced as a Set; Rubber

* 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:

ES 72073

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