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PAI · Electrical & Lighting
803804
In stock · ships from Knoxville
The 803804 is a left-hand (driver side) electric window regulator designed for Mack heavy-duty trucks.
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Verified fitment for 4 applications
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Part data verified against 2 catalog sources
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It uses a motor and cable or linkage assembly to raise and lower the window glass in the door. You would replace it when the window fails to move, operates slowly, or makes grinding or clicking noises—restoring proper sealing and operation.
Part Number: 803804
POWER REGULATOR
Dealer: KP Services Crossville
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Parts commonly needed alongside electrical & lighting
