The Genie 75172GT is a genuine OEM Cummins B3.9 Valve Cover designed for Genie S-100, S-105, S-120, and S-125 telescopic boom lifts. Sourced directly through Genie's OEM supply chain, this cover is built to the exact specification of the original component, ensuring a correct seal over the valve train on Cummins B3.9 engine installations in these machines. Cross-reference part number 75172GT against your parts manual to confirm fitment before ordering.
Key Features
- OEM-Matched Sealing Geometry — Manufactured to the same dimensional tolerances as the original, ensuring full gasket contact and a leak-free seal across the valve cover mating surface.
- Engine-Specific Fit — Designed specifically for the Cummins B3.9 engine configuration as installed in Genie S-series telescopic booms, dropping directly into place without rework.
- Confirmed Compatibility — Fits the Genie S-100, S-105, S-120, and S-125 telescopic boom lifts, covering the full upper range of the S-series straight-boom lineup.
- Protects Critical Valve Train Components — A properly sealed valve cover keeps engine oil contained, prevents contamination from entering the valve train, and supports consistent engine oil pressure throughout boom operation.
- Genuine Genie OEM Part — Supplied as an authentic OEM replacement, carrying the same part number referenced in Genie's service documentation for straightforward parts verification.
The valve cover seals the top of the engine block, enclosing the rocker arms, camshaft lobes, and valve stems that manage air and fuel flow through the engine. It retains engine oil that lubricates these moving components while preventing dirt, debris, and moisture from entering the valve train. When a valve cover cracks, warps, or develops a failed gasket surface, oil leaks onto surrounding components and the engine is exposed to contamination — both conditions that accelerate wear and can lead to more significant engine damage if left unaddressed. Replacing a compromised cover with the correct OEM part restores the integrity of the engine's top-end sealing and keeps the Cummins B3.9 running as intended in demanding boom lift applications.
Part Details
| Part Number | 75172GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Cummins B3.9 Valve Cover |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-120 | S-120 |
| S-125 | S-125 |
| S-100 | S-100 |
| S-105 | S-105 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
