Mahle GS33551 Engine Cylinder Head Bolt Set

Brand	Mahle GS33551
Additional Package Contents	10
Fastener Head Style	Triple Square
Fastener Material	Steel
Fastener Style	Bolt
Item Grade	OEM Standard
Torque To Yield	Yes
Washers Included	No
Fits	Audi and Volkswagen · 36 vehicles

OEM standard. Engine cylinder head bolt set for a direct replacement fit.

Triple-square head. Steel bolts deliver secure fastening and consistent torque.

Torque-to-yield design for dependable clamping force.

Cross-references Audi 077 103 385 D, Audi 077 103 385 K and Volkswagen 077 103 385 D for the same application. See all 4.

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Mahle GS33551 Cylinder Head Bolt Set

The Mahle GS33551 engine cylinder head bolt set is an OEM-standard fastening solution for select Audi and Volkswagen applications. Built with steel fasteners and a triple square head style, it supports secure cylinder head retention in engines that require torque-to-yield hardware.

Key Features

OEM Standard item grade for factory-style service replacement
Torque-to-yield design for proper clamping force during head installation
Steel fastener material for engine hardware applications
Triple square head style for the correct service tool engagement
Compatible with Audi and Volkswagen applications listed below
Mahle GS33551 is referenced for OE-style cylinder head bolt service

Product Details

Mahle manufactures sealing and engine hardware products used by OEMs and technicians worldwide, and the GS33551 follows that service-focused approach. This engine cylinder head bolt set is built for applications that require torque-to-yield bolts, where accurate tightening and proper replacement hardware are critical to maintaining cylinder head clamping integrity. The Mahle GS33551 is a direct-fit service part for select Audi S4, A6 Quattro, A8 Quattro, Allroad Quattro, RS6, S6, and S8 models, as well as Volkswagen Touareg and Phaeton applications.

This part cross-references Audi and Volkswagen OE numbers 077 103 385 D and 077 103 385 K for the same application.

Common Repair Uses

Replacing stretched or removed cylinder head bolts during head gasket service
Restoring proper cylinder head clamping after engine teardown
Addressing sealing issues caused by reused torque-to-yield fasteners
Supporting engine rebuilds on Audi A6 Quattro, Audi A8 Quattro, and Volkswagen Touareg platforms
Service replacement for Audi S4 and Volkswagen Phaeton cylinder head hardware

Installation Notes

Use the correct triple square tool and follow the factory tightening sequence and torque specifications for the specific engine code. Torque-to-yield bolts are not reused after removal, so replace them during cylinder head service. Verify engine application, model year, and OE reference before installation. Fits 2004-2009 Audi S4, N/A; Fits 2004-2007 Volkswagen Touareg, N/A; Fits 2000-2006 Audi A6 Quattro, N/A; Fits 2000-2006 Audi A8 Quattro, N/A; Fits 2004-2006 Volkswagen Phaeton, N/A; Fits 2004-2005 Audi Allroad Quattro, N/A; Fits 2003-2004 Audi RS6, N/A; Fits 2002-2003 Audi S6, N/A; Fits 2001-2003 Audi S8, N/A.

Quality Assurance

Mahle is known for OE-focused engine sealing and hardware products used in professional repair environments. The GS33551 is built to OEM standard specifications for consistent fitment and service reliability in the listed Audi and Volkswagen applications.

This part fits 36 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Liters	Cylinders	Position	Notes
2009	Audi	S4	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2008	Audi	S4	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2007	Audi	S4	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2007	Volkswagen	Touareg	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2006	Audi	A6 Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2006	Audi	A8 Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2006	Audi	S4	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2006	Volkswagen	Phaeton	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2006	Volkswagen	Touareg	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2005	Audi	A6 Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2005	Audi	A8 Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2005	Audi	Allroad Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2005	Audi	S4	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2005	Volkswagen	Phaeton	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2005	Volkswagen	Touareg	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2004	Audi	A6 Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2004	Audi	A8 Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2004	Audi	Allroad Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2004	Audi	RS6	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2004	Audi	S4	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2004	Volkswagen	Phaeton	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2004	Volkswagen	Touareg	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2003	Audi	A6 Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2003	Audi	A8 Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2003	Audi	RS6	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2003	Audi	S6	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2003	Audi	S8	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2002	Audi	A6 Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2002	Audi	A8 Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2002	Audi	S6	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2002	Audi	S8	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2001	Audi	A6 Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2001	Audi	A8 Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2001	Audi	S8	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2000	Audi	A6 Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
2000	Audi	A8 Quattro	4.2L	V8	N/A	Fits various engine types and models for secure installation of Engine Cylinder Head Bolt Set.
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Directly replaces or cross-references 4 part numbers

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

Audi — 077 103 385 DAudi — 077 103 385 KVolkswagen — 077 103 385 DVolkswagen — 077 103 385 K