Description
Product Overview
Restore your Ford Super Duty ride quality and cab alignment with the iFJF KF04050BK Body Cab Mount Bushing Kit. Over time, the factory rubber cab mounts on 1999-2017 F250 and F350 trucks compress, crack, and deteriorate — leading to cab clunking over bumps, uneven body-to-frame alignment, and accelerated wear on other suspension components. This complete polyurethane bushing kit replaces all six cab mount positions with durable, high-performance polyurethane that resists compression set, oil, and road salt for years of reliable service.
Key Features
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Complete 6-Position Kit: Includes all cab mount bushings, sleeves, and hardware for the full cab mounting system — radiator support, front cab mounts, and rear cab mounts. Everything you need in one box.
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High-Performance Polyurethane: Yellow polyurethane with a durometer rating specifically chosen for Super Duty applications. Provides significantly better resistance to compression, oil, grease, and road salt compared to OEM rubber.
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Broad Year Coverage: Compatible with 1999-2017 Ford F250 and F350 Super Duty trucks — covering the 7.3L, 6.0L, 6.4L, and 6.7L diesel generations as well as gas V8 and V10 models.
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2WD & 4WD Compatible: Designed for both 2-wheel drive and 4-wheel drive configurations. Works with all cab styles — Regular Cab, SuperCab, and Crew Cab.
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Eliminates Cab Clunk & Body Roll: Worn cab mounts cause a distinctive clunking noise when going over bumps and contribute to a loose, wandering steering feel. This kit restores the tight, solid connection between cab and frame.
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Includes Installation Hardware: Comes with new bolts, washers, and sleeves where applicable — no need to source hardware separately or reuse corroded factory bolts.
Compatibility
| Year |
Make |
Model |
Engine |
Drive |
Cab |
| 1999-2017 |
Ford |
F-250 Super Duty |
5.4L / 6.2L / 6.8L V10 / 7.3L / 6.0L / 6.4L / 6.7L Diesel |
2WD / 4WD |
All |
| 1999-2017 |
Ford |
F-350 Super Duty |
5.4L / 6.2L / 6.8L V10 / 7.3L / 6.0L / 6.4L / 6.7L Diesel |
2WD / 4WD |
All |
Specifications
| Spec |
Detail |
| Material |
Performance Polyurethane (Yellow) |
| Durometer |
~85A (Optimized for Cab Mount Application) |
| Positions Covered |
6 Total: Radiator Support (2), Front Cab (2), Rear Cab (2) |
| Hardware |
Bolts, Washers, Sleeves Included |
| Part Number |
KF04050BK |
| OEM Cross Reference |
F81Z-1000155-AA, 5C3Z-1000155-AA, 8C3Z-1000155-A |
Why Choose iFJF
Factory Ford cab mounts use rubber that hardens and cracks after 5-8 years of heat cycling and exposure to road contaminants. iFJF polyurethane bushings are engineered for 2-3x the service life of OEM rubber, with better resistance to diesel fuel, oil, and road salt — critical for Super Duty trucks that work hard and live outdoors. Backed by our 30-day satisfaction guarantee.
Frequently Asked Questions
Q: How do I know if my cab mounts need replacement?
A: Common symptoms include: clunking or thumping noise from under the cab when going over bumps or turning, visible gap between the cab and frame at the mount locations, the cab appears to sag or sit unevenly, excessive cab movement during cornering, or cracked and compressed rubber visible at the mount points. If your Super Duty has over 100,000 miles and original cab mounts, they are likely due for replacement.
Q: Will polyurethane cab mounts make the ride harsher?
A: The difference in ride quality is minimal for cab mounts. Unlike suspension bushings (where polyurethane can increase NVH), cab mounts primarily isolate the body from frame vibrations. Our polyurethane durometer was selected specifically to maintain factory-like isolation while providing better durability.
Q: Do I need to lift the cab off the frame to install these?
A: No — you do not need to fully remove the cab. The installation process involves loosening all cab mount bolts, jacking up one side of the cab slightly (using a floor jack with a wood block under the rocker), replacing the mounts one position at a time, and torquing to spec. Budget 3-5 hours for a first-time install.
Q: Do these come with the radiator support bushings?
A: Yes. This complete kit includes bushings for all six positions: two radiator/core support mounts, two front cab mounts (under the footwell area), and two rear cab mounts (under the rear of the cab).
Q: What is the advantage of polyurethane over OEM rubber?
A: Polyurethane offers superior resistance to compression set (will not permanently deform under load), better oil and fuel resistance (critical for diesel trucks), better UV and ozone resistance, and longer overall service life. OEM rubber cab mounts typically last 100,000-150,000 miles; polyurethane can double that lifespan.
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