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Hi Group, I been trying to find an answer to this question and according to Grok it can be done. The issue now is which part number PT949-89240-AB or PT949-89241-AA? I want this to look stock and I want the trim piece. I found PT949-89240-AB for $450 and PT949-89241-AA for $850 but I don't know the deference because the Toyota Part site list them with the same name and no pictures. Can anyone help?
Grok: Yes, it appears possible to retrofit the OEM onboard air compressor from the 2025 4Runner TRD Pro or Trailhunter to your TRD Off Road Premium, based on forum discussions from owners and enthusiasts on sites like 4Runner6G. The ORP shares the same wiring harness in the rear driver's side cargo area (over the wheel well), making it largely plug-and-play. However, you'll need to cut a hole in the existing plastic tray/cover for the control display, or replace it with the Trailhunter/TRD Pro version for a cleaner install. No major modifications like additional wiring or ECU changes are typically required, but professional installation is recommended to avoid damaging the fiberglass or voiding warranties. Confirm compatibility with your specific VIN at a Toyota dealer, as some hybrid ORP models might have minor variations.
The main OEM part for the onboard tire inflator/air compressor kit is PT949-89240-AB (listed as "Tire Inflator Kit - Onboard Compressor" on Toyota parts sites, priced around $700). This kit includes the compressor unit, control box/display, air hose, and mounting hardware.
For the surrounding trim pieces (the cargo side panel or wheel well cover with integrated cutout for the compressor display), the part number is not explicitly separated in most listings, but it's often bundled in the kit or referenced as the "TrailHunter panel." If needed separately, check PT949-89241-AA (a related accessory component for the inflator system, possibly the hose or panel adapter). You can order these through official Toyota parts channels like parts.toyota.com or a local dealer using your vehicle's details for exact fitment.
Grok: Yes, it appears possible to retrofit the OEM onboard air compressor from the 2025 4Runner TRD Pro or Trailhunter to your TRD Off Road Premium, based on forum discussions from owners and enthusiasts on sites like 4Runner6G. The ORP shares the same wiring harness in the rear driver's side cargo area (over the wheel well), making it largely plug-and-play. However, you'll need to cut a hole in the existing plastic tray/cover for the control display, or replace it with the Trailhunter/TRD Pro version for a cleaner install. No major modifications like additional wiring or ECU changes are typically required, but professional installation is recommended to avoid damaging the fiberglass or voiding warranties. Confirm compatibility with your specific VIN at a Toyota dealer, as some hybrid ORP models might have minor variations.
The main OEM part for the onboard tire inflator/air compressor kit is PT949-89240-AB (listed as "Tire Inflator Kit - Onboard Compressor" on Toyota parts sites, priced around $700). This kit includes the compressor unit, control box/display, air hose, and mounting hardware.
For the surrounding trim pieces (the cargo side panel or wheel well cover with integrated cutout for the compressor display), the part number is not explicitly separated in most listings, but it's often bundled in the kit or referenced as the "TrailHunter panel." If needed separately, check PT949-89241-AA (a related accessory component for the inflator system, possibly the hose or panel adapter). You can order these through official Toyota parts channels like parts.toyota.com or a local dealer using your vehicle's details for exact fitment.
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