Engineered specifically for 2011 through 2026 Ford F-250, F-350, F-450, and F-550 Super Duty trucks powered by the 6.7L Powerstroke V8 turbo diesel engine, the MAHLE Original Cylinder Head Bolt Set (Part # GS33693) delivers an all-inclusive, OE-equivalent fastener replacement package for engine rebuilding, valve train service, or cylinder head gasket replacement. When performing standard engine overhauls on stock or lightly tuned trucks where high-performance head studs are not required, utilizing a complete matched set of torque-to-yield (TTY) bolts ensures factory-correct clamping load across the multi-layer steel (MLS) head gaskets.

As a trusted Tier-1 original equipment supplier, MAHLE manufactures its head bolt sets to match or exceed factory specifications for tensile strength, thread pitch, and metallurgy. Because factory TTY fasteners permanently stretch during initial angular torque tightening, reusing old head bolts is strictly prohibited. The GS33693 boxed kit bundles all 18 required head bolts for both cylinder heads into a single convenient part number, eliminating the hassle of ordering individual fasteners while offering zero core charge.

Key Features & Benefits

• Complete 18-Piece Engine Set: Packaged as a complete set containing all 18 head bolts required to secure both cylinder heads on a V8 Powerstroke engine.
• Tier-1 OE Quality Standard: Manufactured by MAHLE to strict original equipment tolerances, ensuring precise thread engagement and reliable clamp load retention.
• Factory Torque-to-Yield (TTY) Specification: Engineered to stretch uniformly during final angular tightening sequences, maintaining consistent sealing pressure against the MLS head gaskets.
• Cost-Effective OE Alternative: Provides a complete boxed replacement set that is significantly more affordable than purchasing individual dealership parts.
• Zero Core Charge: Brand-new outright hardware kit requiring no core deposit or core return shipping.

Technical Specifications

• Manufacturer / Brand: MAHLE Original (Victor Reinz)
• Manufacturer Part Number / SKU: GS33693
• Alternative Part Numbers: ES72944 / REINGL33693 / MAH-GS33693
• Product Type: Complete Cylinder Head Bolt Set (Torque-to-Yield)
• Material: High-Strength OE-Spec Alloy Steel
• Package Quantity: Boxed Set of 18 Bolts (Complete V8 Engine Set)
• Truck Platform: 2011–2026 Ford Super Duty (F-250, F-350, F-450, F-550, F-600, F-650, F-750)
• Engine Platform: 6.7L Powerstroke V8 Turbo Diesel (Gen 1, Gen 2, and Gen 3 Platforms)
• Core Requirement: None
• Warranty: MAHLE Original 2-Year / 200,000-Mile Limited Warranty

Vehicle Fitment & Technical Installation Notes

• 2011–2026 Ford F-250 Super Duty – 6.7L Powerstroke V8 Turbo Diesel
• 2011–2026 Ford F-350 Super Duty – 6.7L Powerstroke V8 Turbo Diesel
• 2011–2026 Ford F-450 Super Duty – 6.7L Powerstroke V8 Turbo Diesel
• 2011–2026 Ford F-550 Super Duty – 6.7L Powerstroke V8 Turbo Diesel
• 2020–2026 Ford F-600 Super Duty – 6.7L Powerstroke V8 Turbo Diesel
• 2016–2019 & 2021–2026 Ford F-650 / F-750 – 6.7L Powerstroke V8 Turbo Diesel
• Fits Model Years: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
• Engine Block Preparation Tip: Clean and chase all 18 threaded blind holes in the engine block meticulously with an M12 x 1.75 thread chaser. Remove all oil, coolant, and carbon deposits. Blow out each bore completely with compressed air to prevent fluid hydro-locking and block cracking.
• Installation Tip: Lightly lubricate clean bolt threads and underhead bearing surfaces with clean engine oil or assembly lubricant. Follow Ford's multi-step torque-angle tightening sequence precisely. Never reuse old torque-to-yield head bolts.