Mahle GS33459 Engine Cylinder Head Bolt Set
OE Quality 60-Day Returns
Mahle

Mahle GS33459 Engine Cylinder Head Bolt Set

Brand Mahle GS33459
Additional Package Contents None
Fastener Head Style Hex
Fastener Material Steel
Fastener Style Bolt
Item Grade Oem standard
Washers Included Not required
Fits BMW · 28 vehicles

OEM standard. Engine cylinder head bolt set for dependable sealing performance.

Steel construction. Hex bolts deliver the strength needed for critical engine hardware.

Trusted by OEMs and technicians for world-class sealing products.

Cross-references BMW 11 12 1 726 478 for the same application. See all 1.

$45.26Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $45.26
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Engine Cylinder Head Bolt Set options

Mahle GS33459 Cylinder Head Bolt Set

Mahle GS33459 is an OEM-standard engine cylinder head bolt set for BMW inline engine service. Built with steel fasteners and a hex head style, it supports secure cylinder head retention for repair and rebuild work on select BMW 325i, 325is, 325iX, 525i, 325e, and 528e applications.

Key Features

  • OEM Standard item grade for factory-style service replacement
  • Steel fastener material for engine hardware applications
  • Hex head style for straightforward torque application
  • Fastener style: bolt
  • Washers not required
  • Additional package contents: none

Detailed Description

Mahle GS33459 is an engine cylinder head bolt set engineered for BMW cylinder head service where accurate clamping and consistent fastener performance matter. Mahle is known for sealing and engine hardware products used by OEMs and technicians worldwide, and this set follows that service-focused approach with OEM-standard construction. This part cross-references BMW 11 12 1 726 478 for the same application. It is a direct-fit choice for BMW 325i, BMW 325is, BMW 325iX, BMW 525i, BMW 325e, and BMW 528e engine repair work when replacing cylinder head bolts during teardown or rebuild.

What It Helps Address

  • Loose or stretched cylinder head bolts during engine service
  • Loss of proper head clamping after head removal
  • Fastener wear found during gasket replacement or rebuilds
  • Need for OEM-standard hardware on BMW engine repairs
  • Corrosion or fatigue in original cylinder head bolts

Installation Notes and Tips

Follow the factory service procedure for the specific BMW engine being repaired. Clean the bolt holes and mating surfaces before installation, verify thread condition, and use the correct torque sequence and tightening stages specified by the vehicle manufacturer. Replace cylinder head bolts any time the head is removed if the service manual calls for new fasteners.

Quality Assurance

Mahle supplies sealing and engine hardware products used in OEM and professional repair environments. Part number GS33459 is built to OEM-standard expectations for BMW engine service and is intended for applications that require dependable cylinder head fastening.

  • Fits 1987-1993 BMW 325i
  • Fits 1987-1991 BMW 325is
  • Fits 1988-1991 BMW 325iX
  • Fits 1989-1990 BMW 525i
  • Fits 1984-1987 BMW 325e
  • Fits 1982-1987 BMW 528e
This part fits 28 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1993BMW325i2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1992BMW325i2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1991BMW325i2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1991BMW325is2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1991BMW325iX2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1990BMW325i2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1990BMW325is2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1990BMW325iX2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1990BMW525i2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1989BMW325i2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1989BMW325is2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1989BMW325iX2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1989BMW525i2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1988BMW325i2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1988BMW325is2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1988BMW325iX2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1987BMW325e2.7LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1987BMW325i2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1987BMW325is2.5LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1987BMW528e2.7LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1986BMW325e2.7LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1986BMW528e2.7LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1985BMW325e2.7LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1985BMW528e2.7LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1984BMW325e2.7LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1984BMW528e2.7LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1983BMW528e2.7LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
1982BMW528e2.7LL6N/AFits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
BMW — 11 12 1 726 478