Ram 1500 Air Suspension Replacement Parts: A Complete Guide

The Ram 1500’s air suspension system provides a smooth ride and adjustable ride height, but like any complex system, components wear out over time. When your air springs leak, the compressor fails, or the height sensors stop working, you need reliable replacement parts. This guide covers the essential Ram 1500 air suspension replacement parts, how to choose between OEM and aftermarket options, and practical advice to get your truck back on the road without overspending.

Understanding the Air Suspension System on the Ram 1500

The air suspension system on fourth-generation (2009–2018) and fifth-generation (2019–present) Ram 1500s consists of air springs (air bags) at each corner, an air compressor, a dryer, solenoid valves, height sensors, and electronic control modules. It automatically adjusts ride height and firmness based on load and driving conditions. Common failures include:

• Leaking air springs (cracks or punctures)
• Compressor burnout (often from overwork due to system leaks)
• Faulty height sensors (causing uneven ride height)
• Dead or weak air springs (sagging after sitting)

Knowing which part failed is the first step. Diagnostic trouble codes from a scan tool can pinpoint the issue, but visual inspection often reveals leaking air springs or a noisy compressor.

Key Ram 1500 Air Suspension Replacement Parts

Air Springs (Air Bags)

Air springs are the rubber bladders that support the vehicle’s weight. Over time, they develop cracks or porosity. For 2009–2018 models, the rear air springs are common failure points. For 2019+ models, front and rear air springs are similar but have different connectors.

• OEM vs Aftermarket: OEM air springs (Mopar) cost about $400–$600 each. Aftermarket brands like Arnott, Strutmasters, and Air Lift offer replacements for $200–$350 each. Aftermarket units often have improved rubber compounds or replaceable fittings.
• Tip: Many aftermarket air springs come as a pair and include new solenoid valves. This can simplify replacement and reduce future failures.

Air Compressor and Dryer Assembly

The compressor pressurizes the system and the dryer removes moisture. Compressors fail from overheating or moisture damage. Most replacements include the dryer unit.

• OEM: Mopar compressors run $500–$800.
• Aftermarket: Arnott K1320 or Dorman 949-020 cost $300–$450. Some aftermarket compressors are rebuildable.
• Caution: If you replace the compressor without fixing system air leaks, the new compressor will quickly fail.

Height Sensors

Height sensors (one per corner on some models, two front and one rear on others) tell the module the ride height. They can fail due to corrosion or mechanical damage.

• OEM: Mopar sensors are $80–$120 each.
• Aftermarket: Dorman and ACDelco offer compatible sensors for $40–$70.
• Installation: Sensors are usually plug-and-play but may need recalibration with a scan tool.

Solenoid Valve Blocks

Solenoids control air flow to each air spring. They can stick or leak. Often integrated into the air spring on newer models.

• Replacement: If a solenoid fails, replace the entire air spring assembly or purchase a separate solenoid kit (e.g., Arnott K2300).

Air Lines and Fittings

Air lines can crack or chafe. Use nylon tubing (1/4 inch or 5/16 inch) and push-to-connect fittings.

• Aftermarket kits: Strutmasters and others sell repair kits with fittings and line.

OEM vs Aftermarket Parts: Which Should You Choose?

| Aspect | OEM (Mopar) | Aftermarket (Arnott, Strutmasters, Dorman) | |--------|-------------|--------------------------------------------| | Price | Higher ($400–$800 per component) | Lower ($150–$450 per component) | | Quality | Matches original specs, exact fit | Often improved design (e.g., triple-bellows air springs) | | Warranty | 12 months/12,000 miles | Typically 2–5 years (Arnott has lifetime warranty on some) | | Availability | Dealers or online | Wide online availability |

Recommendation: For air springs, aftermarket brands like Arnott are popular because they offer a longer warranty and improved durability. For compressors, OEM may last longer if the system is leak-free, but aftermarket compressors are a cost-effective alternative. Height sensors are usually fine with aftermarket.

Signs You Need Replacement Parts

• Truck sags overnight: Leaking air spring.
• Compressor runs constantly: System leak or failing compressor.
• Uneven ride height: Height sensor issue.
• Warning light: Air suspension fault on dash.
• Rough ride: Air spring or shock absorber (some models have electronic dampers).

Cost of Ram 1500 Air Suspension Replacement Parts

Replacing a single air spring (including labor) costs $500–$1,000. DIY replacement of a rear air spring is manageable with basic tools; parts alone about $200–$400. A full air suspension replacement (all four corners plus compressor) can run $2,000–$4,000 professionally, or $1,000–$2,000 in parts for DIY.

Budget shopping:

• Look for complete kits (e.g., Arnott K2400 for 2009–2018 includes two rear air springs and solenoid valves).
• Consider a conversion coil spring kit if you want to eliminate air suspension entirely (cost $400–$1,000).

How to Match Parts to Your Ram 1500

Verify your truck's model year, cab/bed configuration, and whether it has air suspension or the optional electronic damping. Check your VIN to confirm OEM part numbers. Aftermarket parts often specify fitment (e.g., "Ram 1500 2013-2018 4WD").

Tools Needed for DIY Replacement

• Jack and jack stands
• Torx bits (T30, T40)
• Ratchet and sockets (10mm, 13mm, 15mm, 18mm)
• Air line disconnect tool (for push-to-connect fittings)
• Scan tool (to clear codes and calibrate heights)

Practical Tips for Longevity

• Replace all four air springs at once if possible; age and mileage are similar.
• Install a moisture separator or upgrade the dryer if you live in a humid climate.
• After installation, test the system for leaks with soapy water.
• If your compressor failed because of a leak, fix the leak first.

Final Recommendation

For most Ram 1500 owners, aftermarket air spring kits from Arnott represent the best value—they offer a lifetime warranty on some products and use improved rubber. For compressors, consider a Dorman if you're on a budget, but replace it only after addressing all air leaks. Height sensors are interchangeable from brands like Dorman or ACDelco. If you plan to keep your truck long-term, converting to traditional coil springs (like the Strutmasters conversion kit) eliminates future air suspension issues, but you lose ride height adjustability.

Always verify compatibility with your specific Ram 1500 using your VIN. Whether you DIY or hire a shop, sourcing quality parts and fixing all air suspension problems at once will save you time and money.