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Harmonic Balancer Bolt - 2003-2010 6.0L & 6.4L Ford Power Stroke
PART # SKU CP239
Original price
$33.77
-
Original price
$33.77
Original price
$33.77
$33.77
-
$33.77
Current price
$33.77
Availability:
in stock, ready to be shipped
Heavy-Duty Bolt Strength
Manufactured from premium-grade, high-strength steel to withstand extreme crankshaft loads and high-torque applications.
Maintains Proper Crankshaft Retention
Engineered to securely hold the harmonic balancer in place, reducing the risk of loosening, vibration, or engine damage.
Corrosion-Resistant Finish
Coated to protect against rust and wear, ensuring long-term durability in harsh engine conditions.
Built for Stock & Performance Builds
Ideal for daily drivers, towing applications, and high-performance setups requiring reliable, long-lasting hardware.
INSTALL GUIDE
This guide covers installation of the XOTIC PERFORMANCE™ CP239 harmonic balancer bolt for the 2003–2010 6.0L and 6.4L Ford Power Stroke. Prefer a printable copy? Download the PDF manual.
Lubricate all three contact surfaces, or the torque figure means nothing. This is one bolt holding the entire front-of-engine stack, so the whole job comes down to reaching the right clamp load once. The manual calls for assembly lubricant on the threads, underneath the bolt head, and on the washer face that contacts the balancer. Skip any of the three and your wrench reaches 90 ft-lbs before the joint is properly loaded.
Why the balancer bolt matters on a Power Stroke
A diesel's torsional pulses are the harshest thing a crankshaft nose ever sees — high peak cylinder pressure, arriving eight times per two revolutions, on a heavy rotating assembly. The harmonic balancer exists to damp exactly that, and the balancer bolt is what keeps it clamped to the snout so it can do its job.
When the bolt loses clamp load, the balancer starts to move on the snout. That wears the interface, throws the balancer out of true, and can eventually damage the crank — a repair that means the engine comes out. It's one inexpensive fastener protecting a very expensive part. XOTIC PERFORMANCE™ fasteners are manufactured from our premium XOTIC 7200 steel alloy and backed by a lifetime warranty.
Before you start: verify first
Confirm that part number CP239 is compatible with your engine before installing any components. Inspect all package contents for damage and report anything you find.
How to install a harmonic balancer bolt on a 6.0L or 6.4L Power Stroke
- Clean everything. Clean all parts thoroughly, including the bolt threads and the end of the crankshaft, to remove all dirt and foreign oils.
- Lubricate in three places. Spread the assembly lubricant included in the package on the threads, underneath the bolt head, and on the face of the washer that contacts the balancer.
- Install hand-tight. Thread the bolt in by hand and confirm the balancer is fully seated on the snout before applying any torque.
- Torque to 90 ft-lbs. Bring the bolt to final torque with the crank locked so the engine can't turn.
6.0L / 6.4L Power Stroke harmonic balancer bolt torque spec
| Fastener | Torque |
|---|---|
| Harmonic balancer bolt | 90 ft-lbs |
A common mistake to avoid: using the balancer bolt to draw the balancer onto the crank snout. It isn't an installation tool. Use a proper balancer installer, get the balancer fully seated, and only then fit the bolt — pulling it on with the bolt loads the crank snout threads in a way they were never designed for.
Frequently asked questions
What is the balancer bolt torque spec for a 6.0L or 6.4L Power Stroke?
90 ft-lbs, with assembly lubricant on the threads, under the bolt head, and on the washer face that contacts the balancer.
Does CP239 fit both engines?
Yes — it covers the 6.0L and the 6.4L across the 2003–2010 range.
Why does lubrication change the torque figure so much?
Because torque is only a proxy for clamp load, and most of the torque you apply is spent overcoming friction rather than stretching the bolt. Change the friction and you change the clamp load you get at the same wrench reading — which is why the spec assumes the lubricant in the box.
Do I need to lock the crank?
Yes. Use a flywheel or flexplate holding tool rather than jamming the ring gear.
While you're at the front of the engine
See our head stud guides for the 6.0L (CP874) and 6.4L (CP875).
Need help?
For technical support, email support@xotic-performance.com. All XOTIC PERFORMANCE™ fasteners are covered by our limited lifetime warranty. Finished your install? Tag #XOTICPERFORMANCE on Instagram for a chance to be featured.
© 2026 XOTIC PERFORMANCE™. This installation guide is an original copyrighted work of XOTIC PERFORMANCE™. Reproduction, distribution, or use of this content in whole or in part without written permission is prohibited. Doc ref: 2026.01.31 (web edition 2026.08).
PACKAGE CONTENTS
VEHICLE FITMENTS
⚠️ PROP 65 WARNING
CALIFORNIA WARNING: Cancer and Reproductive Harm -www.P65Warnings.ca.gov
