Description
Product Overview
The HFETDP power window relay is a precision‑engineered component designed specifically for Volvo FH and FM trucks built between 1998 and 2013. Crafted from high‑temperature resistant polymer and copper contacts, it delivers consistent electrical performance in demanding environments. Measuring 1.18 x 0.79 x 0.39 inches and weighing only 1.76 ounces, the relay fits the original OEM housing without modification. Its black finish blends with the vehicle’s interior trim, while the part number 22154235 ensures exact compatibility.
Usage
This relay powers the left‑front power window, making it essential for daily operation of cargo and passenger doors. Whether you are a fleet manager maintaining multiple trucks or an individual owner performing a quick DIY fix, the HFETDP relay restores smooth window movement after wear or failure. It performs reliably in extreme temperatures, vibration, and moisture typical of long‑haul trucking.

Why Choose Us
HFETDP adheres to strict OEM standards, guaranteeing a perfect fit and function that matches the original equipment. Each unit undergoes rigorous quality testing for contact resistance, durability, and heat tolerance. Our dedicated customer support team provides technical assistance and a hassle‑free return policy, ensuring confidence in every purchase.
Key Features
- Exact OEM match for Volvo FH/FM left‑front window circuits
- Compact black housing blends with interior trim
- High‑temperature polymer body and copper contacts for durability
- Easy plug‑and‑play installation in minutes
- Meets or exceeds OEM electrical specifications
FAQ
Is this relay compatible with all Volvo models?
The relay is designed for Volvo FH and FM trucks from 1998 to 2013. It fits the left‑front power window circuit of these models only.
Can I install the relay myself?
Yes. The relay uses a standard plug‑in connector that matches the OEM socket. Removal of the old relay and insertion of the new unit takes only a few minutes with basic hand tools.
What warranty does HFETDP provide?
HFETDP offers a one‑year limited warranty covering defects in materials and workmanship. Contact our support team for claim assistance.
Will the black color affect the vehicle’s interior aesthetics?
The black finish is designed to blend with the surrounding trim, providing a seamless appearance without drawing attention.
How does this relay improve window performance?
By delivering stable voltage and current to the window motor, the relay ensures smooth, consistent operation and reduces the risk of motor burnout caused by intermittent power.




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