Premium Trailer Air Bag compatible with Hendrickson INTRAAX / VANTRAAX Suspension. This direct OEM replacement air spring delivers stable load support and effective shock absorption for heavy-duty semi-trailers and commercial hauling vehicles. Manufactured to strict OEM specifications for perfect fit, tool-free installation and extended service life.

Exact Part Numbers & Interchange References

Below are all OEM and aftermarket cross-reference part numbers for quick, accurate fitment verification to avoid mismatches:
Trailer Air Bag 9978 Relevant Part Numbers: W01-358-9978 S‑28929 C‑28929 1R12‑1179 67588 9 10‑14 P 959 1DK23I‑A959

Hendrickson Suspension Fitment Models

This air spring fits the following Hendrickson INTRAAX and VANTRAAX heavy-duty trailer suspension models for various commercial load requirements:
Hendrickson INTRAAX Series: AAT23K / AANT23K AAT25K AAEDT30K AAZNT23K / 46K / 69K
Hendrickson VANTRAAX Series: HKANT40K / 46K / 50K HKA180 / 200 / 250

Key Product Features

  • Heavy-Duty Build: Reinforced high-strength rubber structure, wear, corrosion and aging resistant, suitable for harsh road conditions and heavy-load hauling.
  • Direct OEM Fit: Exact OEM dimensions, no modification needed, perfect plug-and-play replacement for worn or damaged factory air bags.
  • Superior Ride & Stability: Absorbs road vibration, reduces suspension wear, stabilizes trailer operation and boosts driving safety.
  • Leak-Proof & Durable: Strict quality tested for excellent air tightness, zero leakage and long service life for daily heavy-duty use.
  • Broad Compatibility: Matches multiple mainstream Hendrickson suspension models and cross-reference part numbers for wide application.

Application Scenarios

Ideal for semi-trailers, cargo trailers, flatbed trailers and refrigerated trailers with Hendrickson suspension systems. Perfect replacement for cracked, leaking or faulty air springs to restore full suspension performance.

Package Includes

2 x Trailer Air Bag (Matches listed part numbers & suspension models) Professional installation is recommended for optimal performance and durability

After-Sales & Service Guarantee

  • Premium Quality: 100% pre-shipped inspection to ensure no defects or air leakage.
  • Fast Shipping: Shipped within 1-2 business days after payment confirmation.
  • 24/7 Support: Feel free to contact us for fitment, installation and product inquiries.
  • Worry-Free Returns: Valid return & exchange service for quality issues under normal use.
Important Note: Please verify your original part number and suspension model before purchase. Contact us for free fitment confirmation if you are unsure!