SKU: 90398149322

Fabtech 17-20 Ford F250/350 4WD Diesel 4in Rear Box Kit

Sale price$141.27 Regular price$156.97
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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18

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Description

Fabtech 17-20 Ford F250/350 4WD Diesel 4in Rear Box KitFabtech takes their 4 in. Super Duty systems to the next level with the release of the Dirt Logic 4. 0 Coilover Conversion. This bolt on Coilover conversion will transform the ride quality of the Super Duty while providing outstanding damping capacity for rugged offroad use. The Dirt Logic 4. 0 Coilover is constructed with a stainless steel body and a NitroSteel piston rod for maximum corrosion resistance. This 4 in. lift Coilover Conversion is

Fabtech takes their 4 in. Super Duty systems to the next level with the release of the Dirt Logic 4.0 Coilover Conversion. This bolt on Coilover conversion will transform the ride quality of the Super Duty while providing outstanding damping capacity for rugged offroad use. The Dirt Logic 4.0 Coilover is constructed with a stainless steel body and a NitroSteel piston rod for maximum corrosion resistance. This 4 in. lift Coilover Conversion is offered with Fabtech's Tubular Radius Arm or 4 Link Systems Radius Arm system features an offset tubular design with dimple die side plate for maximum strength. The 4 Link system replaces the stock Radius Arms for an improved ride quality both on and offroad due to a near zero caster change throughout the suspension travel. Both systems include a track bar relocation bracket to center the front Super Duty axle under the vehicle with the new lift height. Rear lift comes from a 5 in. lift block with bump stop relocation brackets. Rear Dirt Logic 2.25 stainless steel shocks are valved to provide a balanced ride to the Super Duty for the finest on road ride quality. These high end 4 in. Systems are the pinnacle of quality and ride performance for the Super Duty. Each system is a bolt on installation and comes with Fabtech's 5 year 60,000 mile warranty.

This Part Fits:

Year Make Model Submodel
2017-2026 Ford F-250 Super Duty King Ranch
2017-2026 Ford F-250 Super Duty Lariat
2018-2024 Ford F-250 Super Duty Limited
2017-2026 Ford F-250 Super Duty Platinum
2017-2026 Ford F-250 Super Duty XL
2017-2026 Ford F-250 Super Duty XLT
2017-2026 Ford F-350 Super Duty King Ranch
2017-2026 Ford F-350 Super Duty Lariat
2018-2024 Ford F-350 Super Duty Limited
2017-2026 Ford F-350 Super Duty Platinum
2017-2026 Ford F-350 Super Duty XL
2017-2026 Ford F-350 Super Duty XLT
Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 90398149322

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4.4 ★★★★★
Based on 16 reviews
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Verified Purchase
Bil R.
Pawtucket, US
★★★★★ 5
Perfect fit for 5.7 Mercruiser
Great fit for mercruiser 5.7 Have had it installed for about 6 months and still working great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
A
Verified Purchase
Arelius Walker
Port Orchard, US
★★★★★ 5
Great Buy!!! 5-Star!!!
Bolted up! Boat starts like the original starter! Great Buy!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
N
Verified Purchase
neil d.
Lexington, US
★★★★★ 4
Seems good but not a direct replacement
This starter did work but it was not a direct replacement for the starter in my 1986 Malibu skier with 5.7 mercruiser direct drive. This starter is a mini-starter, which is great in that it’s smaller and lighter but it meant that my starter bolts were too long and I had to add 3/8” stack of washers under the bolt heads. The bracket that supports the front of the starter to the engine block was also not able to be used because the new starter is shorter, although with the lighter starter, that bracket is probably no longer necessary. First few starts have been fine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 10, 2025
J
Verified Purchase
Jerry Sonnier
West Palm Beach, US
★★★★★ 5
Fit Great. Works great.
Fit perfectly Mercruiser 4.3
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 22, 2026
A
Verified Purchase
Amazon Customer
New York, US
★★★★★ 5
Boat once again starts
Easy install once I figured out how to reach the starter. Worked first try and my boat is starting again. I think being a contortionist would help with the install since it is under the engine and boats typically only have access from the top. It probably took me an hour to get the old one off and about 30 min to install the new. The symptom of the broken one was a click sound when trying to start the motor, but nothing turning over. Same sound with new. Battery or a jumper.
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Reviewed in the United States on October 10, 2025

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