4-Inch Spacer Air Spring Kit with Compressor for Silverado 3500 HD
- Includes the 0–7.5 in lift air spring kit, 4-inch 4-degree spacers, and a wireless controller with compressor
- Fits 2011–2019 Silverado/Sierra 2500 HD and 3500 HD in 4WD and RWD
- Spacers position the air springs correctly on lifted trucks
- Minor drilling required; downloadable installation guide available
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Does NOT increase towing capacity. Minor drilling required. Fitment on this page is based on the manufacturer’s application data.
About this kit
4-Inch Spacer Air Spring Kit with Compressor, fitment-checked
This one is built for lifted heavy-duty trucks. 100074WC includes the rear air spring kit rated for 0–7.5 in of lift, a 4-inch 4-degree spacer set to position the bags at that height, and a wireless air bag controller kit with compressor. Fitment spans 2011–2019 Silverado and Sierra 2500 HD and 3500 HD in 4WD and RWD, plus the 2015 Silverado 3500. Minor drilling is required.
The spacer is what makes this bundle work on a lifted truck: it takes up the extra distance between frame and axle so the bag operates in its designed range instead of stretched out. Pressure is managed from the wireless remote through the onboard compressor. Trims covered include High Country, LT, LTZ, and WT on the Chevrolet side and Base, Denali, SLE, SLT, and WT on the GMC side. A downloadable installation guide is available. Drilling is part of the install, and air springs do not change the rated tow capacity.
What’s in the box
Kit contents
- 1× Air Spring Kit 10007$329.95
- 1× Air Spring Spacer Kit 10013$59.95
- 1× Wireless Air Bag Controller Kit w/Compressor 10106$749.95
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 100074WC kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 100074WC |
| UPC / GTIN | 00840269938931 |
| Shipping weight | 47 lb |
| Country of origin | CN |
| Category | Suspension & Lift Kits › Air Suspension |
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