PRODUCT DETAILS
Thieman liftgate power unit power down (toggle). This is part number 4404. We have tagged this as a Thieman power unit. This is commonly found on the LRST and M model gates.
This is the 2,650 PSI version. Use part number 4499 for the 2,000 PSI version.
| Item | Part Number Description | Qty./Model |
| 1 | 4423520 Motor 8111 | 1 |
| 2 | 4439 Pump and Reservoir Asm (2650 PSI) | 1 |
| 2 | 4499 Pump and Reservoir Asm (2000 PSI) | 1 |
| 3 | 4420410 Breather Cap | 1 |
| 4 | 4480 Buss Bar | 1 |
| 5 | 4421520 Bearing | 1 |
| 6 | 4421530 Seal | 1 |
| 7 | 8109-012 Screw .25 x .75 | 2 |
| 8 | 4421420 Bracket | 1 |
| 9 | 4468 Solenoid | 1 |
| 10 | 4421600 O-Ring | 2 |
| 11 | 4452 Solenoid Coil only | 2 |
| 12 | 4445 Solenoid Valve Asm (lower) | 1 |
| 13 | 4438 Solenoid Valve Asm (raise) | 1 |
| 14 | 4457 Reservoir - ø4.50 x 12 | 1 |
| 15 | 4421660 Self Tap Screw #10 x .38 | 6 |
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MODELS USING THIS PART
Note
This part appears in the following parts manuals. Always verify compatibility with your specific liftgate model and serial number before ordering.
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SHIPPING AND RETURNS
Shipping Information
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OEM Parts Diagram References
Find this Thieman Liftgate part in original OEM diagrams. Each link opens directly to the matching section in a new tab.
Reference Notice: Manual links are provided for reference only. If you have any doubt, contact us — we’re happy to verify parts and help you purchase with confidence.
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- Description
Thieman liftgate power unit power down (toggle). This is part number 4404. We have tagged this as a Thieman power unit. This is commonly found on the LRST and M model gates.
This is the 2,650 PSI version. Use part number 4499 for the 2,000 PSI version.
| Item | Part Number Description | Qty./Model |
| 1 | 4423520 Motor 8111 | 1 |
| 2 | 4439 Pump and Reservoir Asm (2650 PSI) | 1 |
| 2 | 4499 Pump and Reservoir Asm (2000 PSI) | 1 |
| 3 | 4420410 Breather Cap | 1 |
| 4 | 4480 Buss Bar | 1 |
| 5 | 4421520 Bearing | 1 |
| 6 | 4421530 Seal | 1 |
| 7 | 8109-012 Screw .25 x .75 | 2 |
| 8 | 4421420 Bracket | 1 |
| 9 | 4468 Solenoid | 1 |
| 10 | 4421600 O-Ring | 2 |
| 11 | 4452 Solenoid Coil only | 2 |
| 12 | 4445 Solenoid Valve Asm (lower) | 1 |
| 13 | 4438 Solenoid Valve Asm (raise) | 1 |
| 14 | 4457 Reservoir - ø4.50 x 12 | 1 |
| 15 | 4421660 Self Tap Screw #10 x .38 | 6 |