Description
Product Overview
The iFJF KF04050BK Body Mount Bushing Kit is a direct replacement for the factory cab mount bushings on 1999-2017 Ford F-250 and F-350 Super Duty trucks. Over time, factory rubber bushings compress, crack, and degrade — leading to excessive body roll, cab-to-frame misalignment, and harsh ride quality. This complete bushing kit restores proper body-to-frame isolation and dramatically improves ride comfort and handling.
Key Features
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Heavy-Duty Urethane Construction: Engineered from high-durometer polyurethane that resists oil, road salt, diesel fuel, and extreme temperature cycling — far outlasting factory rubber.
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Complete Replacement Kit: Includes all necessary body mount bushings, sleeves, and washers for a full cab mounting system refresh (position count varies by cab configuration).
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Eliminates Body Roll & Wandering: Worn body mounts cause the cab to shift on the frame, creating loose steering feel. New bushings restore tight, precise handling.
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Direct Fit, No Modification: Designed to OEM KF04050BK specifications for plug-and-play installation on 1999-2017 Super Duty platforms.
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Corrosion-Resistant Hardware: Zinc-plated or stainless steel sleeves prevent rust bonding that makes future service near-impossible.
Compatibility Table
| Year |
Make |
Model |
Drivetrain |
Notes |
| 1999-2017 |
Ford |
F-250 Super Duty |
2WD / 4WD |
All cab configurations |
| 1999-2017 |
Ford |
F-350 Super Duty |
2WD / 4WD |
All cab configurations |
Specifications
| Specification |
Value |
| Part Number |
KF04050BK |
| Material |
Polyurethane |
| Position |
Complete Cab Mount Set |
| SKU |
FJ-FORD15-CK |
| Hardware Included |
Yes (sleeves, washers, bolts) |
Signs You Need New Body Mounts
- Clunking or knocking noise from under the cab when going over bumps
- Visible cracking, flattening, or crumbling of existing bushings
- Cab sits uneven or leans to one side
- Increased cabin vibration and road noise
- Difficulty aligning body panels after a collision repair
Installation Notes
Body mount replacement requires lifting the cab slightly off the frame — this is an advanced DIY job. Professional installation is recommended. Always replace body mounts in complete sets (never just one side) to maintain proper alignment. A two-post lift makes the job significantly easier. Torque all bolts to Ford factory specifications after installation, then re-torque after 500 miles of driving.
Why Choose iFJF
iFJF body mount bushings are manufactured to strict quality standards, using premium polyurethane compounds that outperform OE rubber in durability, chemical resistance, and load-bearing capacity. Every kit is inspected for dimensional accuracy before shipping. Backed by our satisfaction guarantee and US-based customer support.
Frequently Asked Questions
Q: Does this kit fit both regular cab and crew cab?
A: Yes. The KF04050BK kit covers all cab configurations for 1999-2017 Ford F-250/F-350 Super Duty — regular cab, super cab, and crew cab. Verify your year range before ordering.
Q: How does polyurethane compare to OEM rubber bushings?
A: Polyurethane offers significantly better chemical resistance (oil, diesel, road salt), higher load capacity, and longer service life than factory rubber. The trade-off is slightly firmer ride — most Super Duty owners consider this an upgrade, not a drawback.
Q: Can I replace just one or two body mounts?
A: We strongly recommend replacing the complete set. Mixing old and new bushings creates uneven load distribution and can cause premature wear on both the new bushings and the cab mounting points.
Q: Do I need special tools?
A: Basic hand tools plus a floor jack or lift to raise the cab. An impact wrench speeds up bolt removal significantly. A body mount bushing press tool set makes R&R much easier — available at most auto parts stores for loan.
Q: What torque should the body mount bolts be tightened to?
A: Follow Ford factory torque specs for your specific model year — typically 55-70 ft-lbs for cab mount bolts. Always re-torque after the first 500 miles as the bushings settle.
Q: Will these reduce road noise and vibration?
A: Yes. Fresh bushings properly isolate the cab from frame vibrations, noticeably reducing road hum and harshness — especially on rough pavement and gravel roads.
