4-Inch Lift Kit with N3 Shocks for Dodge W150–W350 4WD (1977–1993)
- Fits 1977–1993 Dodge W150, 1978–1980 W200, and 1981–1993 W250 and W350 in 4WD
- Dana 44 front axle only. Does not fit Cummins diesel trucks
- Front: lifted leaf springs, 3-bolt Dana 44 steering block, bushing and sleeve kit, U-bolts, hardware
- Rear: 3-inch lift blocks with U-bolts and hardware
- Two N3 shock pairs and a universal U-bolt kit included in the BOM
- Listed install time 6-8 hours; downloadable installation guide available
Check tire fit for this kit → The manufacturer publishes 6 verified tire sizes for this kit, with wheel width, bolt pattern and offset for each.
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Models with Cummins diesel engine
ONLY fits models with Dana 44 front axle. Fitment on this page is based on the manufacturer’s application data.
About this kit
4-Inch Lift Kit with N3 Shocks, fitment-checked
Rough Country 310.20 is a 4-inch lift kit for 1977–1993 Dodge W150, 1978–1980 W200, and 1981–1993 W250 and W350 4WD trucks. Front lift comes from replacement leaf springs with a Dana 44 steering block; the rear rides on 3-inch lift blocks with U-bolts. Two N3 shock pairs are part of the kit. It fits only trucks with a Dana 44 front axle and does not fit Cummins diesel models.
This 4-inch lift kit for the 1977–1993 Dodge W150 4WD and its W200, W250, and W350 counterparts rebuilds both ends: lifted front leaf springs, a three-bolt Dana 44 steering block, spring bushings and sleeves, U-bolts, and hardware up front, plus 3-inch lift blocks in the rear. Two N3 shock pairs handle damping. Confirm your front axle is a Dana 44 and that the truck is not Cummins-powered before ordering. Rough Country lists the job at 6-8 hours, and a downloadable installation guide is available. Check the tire and wheel chart, since some fitments call for trimming.
What’s in the box
Kit contents
- 1× Lift Block Kit 6594$39.95
- 1× Sprg. Bush & Slv Kit 6072
- 1× Installation Kit 7520
- 1× Universal U-Bolt Kit 7603$39.95
- 2× 4in Front Leaf Spring 8003
- 1× Steering Block 6603$59.95
- 1× N3 Shock Pair 23275
- 1× N3 Shock Pair 23276
Priced components are sold separately here, so a worn shock or arm can be replaced on its own later.
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 310.20 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 310.20 |
| UPC / GTIN | 00843030128081 |
| Lift height | 4 in |
| Shock package | N3 series |
| Shipping weight | 147 lb |
| Category | Suspension & Lift Kits › Lift Kits |
Why buy here
The fitment-first store
Keep looking
More Lift Kits
4 Inch
4 Inch
4 Inch
4 Inch
4 Inch
6 Inch
6 Inch
6 Inch
6 Inch
6 Inch
6 Inch
6 Inch
6 Inch
6 Inch
6 Inch