PRODUCT DETAILS
Gravity Down Power Unit for TT-12. This power unit can be ordered in full or you can use the breakdown below to order individual items.
| 1 | 4423520 Motor 8111 | 1 |
| 2 | 4400329 Pump and Reservoir Only | 1 |
| 3 | 4420410 Breather Cap | 1 |
| 4 | 4422330 Reservoir ø4.50 x 11 | 1 |
| 5 | 4421520 Bearing | 1 |
| 6 | 4421530 Seal | 1 |
| 7 | 4421350 Bracket | 1 |
| 8 | 4422850 PB Box Asm | 1 |
| 9 | 8120380 Lockwasher .25 | 2 |
| 10 | 8109-012 Screw .25 x 1.50 | 2 |
| 11 | 8144113 Street Elbow .75 | 1 |
| 12 | 4445 Valve Asm | 1 |
| 13 | 4452 Coil only | 1 |
| 14 | 8219666 Pipe Nipple .75 x 6 | 1 |
| 15 | 8192090 Pipe Coupling .75 | 1 |
| 16 | 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
Shipping timelines, transit options, and exceptions can vary by part and location. Please review our official policy page for the most current shipping and return details.
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Return eligibility, time windows, and any applicable fees are outlined on our policy page. Policy terms may be updated there, so please refer to that page before placing your order.
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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.
No active OEM diagram references are currently available for this item.
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- Description
Gravity Down Power Unit for TT-12. This power unit can be ordered in full or you can use the breakdown below to order individual items.
| 1 | 4423520 Motor 8111 | 1 |
| 2 | 4400329 Pump and Reservoir Only | 1 |
| 3 | 4420410 Breather Cap | 1 |
| 4 | 4422330 Reservoir ø4.50 x 11 | 1 |
| 5 | 4421520 Bearing | 1 |
| 6 | 4421530 Seal | 1 |
| 7 | 4421350 Bracket | 1 |
| 8 | 4422850 PB Box Asm | 1 |
| 9 | 8120380 Lockwasher .25 | 2 |
| 10 | 8109-012 Screw .25 x 1.50 | 2 |
| 11 | 8144113 Street Elbow .75 | 1 |
| 12 | 4445 Valve Asm | 1 |
| 13 | 4452 Coil only | 1 |
| 14 | 8219666 Pipe Nipple .75 x 6 | 1 |
| 15 | 8192090 Pipe Coupling .75 | 1 |
| 16 | 4421660 Self Tap Screw #10 x .38 | 6 |