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 ARP Pro Series Harmonic Balancer Bolt Kit (Part # 150-2504) provides high-strength crankshaft snout retention. As the crankshaft flexes and twists under heavy diesel combustion pulses, the harmonic balancer absorbs massive amounts of kinetic energy. Factory single-use torque-to-yield crank bolts can stretch or lose clamping force under severe torsional vibration, allowing the damper to slip or wobble on the crankshaft snout.

ARP manufactures the 150-2504 kit from premium 8740 chromoly forged steel, heat-treated in-house to a nominal 200,000 PSI tensile strength—substantially stronger than factory hardware. The kit features an extra-tall 12-point head design that easily accommodates deep sockets and eliminates rounding worries during high-torque installation, accompanied by a thick 1/4-inch wide-area washer that optimizes load distribution across the damper hub face. Supplied complete with assembly lubricant and zero core charge, this reusable hardware guarantees absolute stability.

Key Features & Benefits

• 200,000 PSI Tensile Strength: Forged from premium 8740 chromoly steel to provide superior clamp load and resistance against high-frequency torsional vibration.
• Extra-Tall 12-Point Head Design: Engineered with an extended head height that prevents socket slip and simplifies torque wrench engagement in tight engine bays.
• Thick 1/4-Inch Wide-Area Washer: Distributes clamping force evenly across the harmonic balancer hub face, preventing surface galling and fretting.
• Roll-Formed Threads: Threads are rolled after heat treatment to provide maximum cyclic fatigue resistance and smooth fastener engagement.
• Reusable High-Performance Hardware: Unlike single-use factory stretch bolts, ARP chromoly fasteners can be safely removed and reinstalled during routine servicing.
• Zero Core Charge: Brand-new outright engine hardware kit requiring no core deposit or core return shipping.

Technical Specifications

• Manufacturer / Brand: Automotive Racing Products (ARP)
• Manufacturer Part Number / SKU: 150-2504
• Alternative Part Numbers: 1502504 / ARP150-2504
• Product Series: Pro Series Harmonic Balancer Bolts
• Fastener Material: Premium Forged 8740 Chromoly Steel
• Tensile Strength Rating: 200,000 PSI
• Fastener Head Style: Extra-Tall 12-Point Socket Head
• Washer Included: 1/4-Inch Thick Wide-Area Parallel-Ground Washer
• Fastener Finish: Black Oxide Protective Coating
• Truck Platform: 2011–2026 Ford Super Duty (F-250, F-350, F-450, F-550)
• Engine Platform: 6.7L Powerstroke V8 Turbo Diesel (Gen 1, Gen 2, and Gen 3 Platforms)
• Core Requirement: None
• Warranty: ARP Limited Manufacturer 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
• Fits Model Years: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
• Crank Snout Preparation Tip: Clean the crankshaft snout threads and mating shoulder thoroughly. Inspect for burrs or scoring before sliding the harmonic balancer into position.
• Installation Tip: Liberally apply ARP assembly lubricant or high-pressure thread lube to the bolt threads, underhead flange, and both sides of the thick washer. Torque the balancer bolt to ARP specified torque targets. Never reuse factory torque-to-yield harmonic balancer bolts.