CAT 7H3937 LOCK WASHE for 3516B Caterpillar Part - WSTPARTS
7H3937 LOCK WASHE for Caterpillar 3516B — Genuine CAT & Replacement Part
WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement LOCK WASHE (Part # 7H3937). Designed for CAT 3516B, 3306, C9, G3608, G3616, 320C equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 3516B, 3306, C9, G3608, G3616, 320C
- ✔ Meets Caterpillar original quality and performance standards
- ✔ Genuine CAT lines: New Genuine / Cat Reman / Cat Classic | OEM-equivalent direct replacements
- ✔ Available for order, contact for lead time
Specifications
| Part Number (MPN) | 7H3937 |
| Product Name | LOCK WASHE |
| Brand | CAT |
| Applicable Models | 3516B, 3306, C9, G3608, G3616, 320C |
| Weight | 0.05 kg |
| Condition | New (Genuine CAT / OEM-equivalent direct replacement) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 7H3937 in the Caterpillar parts manual: the machine it is published under, the system it belongs to, the group number and the manual page. Use it to confirm the part against your own parts book before ordering.
| Machine | System | Group No. | Manual Page |
| 3306 | ELECTRICAL AND STARTING SYSTEM | 143-0540 | p.1277 |
| 3512 | COOLING SYSTEM | 127-8526 | p.503 |
| 3516B | COOLING SYSTEM | 254-0038 | p.195 |
| C9 | ELECTRICAL AND STARTING SYSTEM | 445-5763 | p.169 |
| G3608 | ELECTRICAL AND STARTING SYSTEM | 219-9926 | p.395 |
| G3612 | ELECTRICAL AND STARTING SYSTEM | 195-6245 | p.181 |
| G3616 | ELECTRICAL AND STARTING SYSTEM | 206-5459 | p.624 |
| 3306 | ELECTRICAL AND STARTING SYSTEM | 143-0540 | p.1282 |
System Notes — ELECTRICAL AND STARTING SYSTEM
The electrical and starting system covers the battery, starter motor, alternator, wiring harness, relays, switches and the instrument panel. It carries current from the batteries to the starter to crank the engine, and from the alternator back to keep the batteries charged. Because these machines work in dust, vibration and wide temperature swings, connectors corrode, harness insulation chafes against the frame, and starter solenoids burn out from repeated short cranks. Parts in this group are usually replaced on a symptom basis — slow cranking, a dash warning, lights that dim under load, or a no-start condition traced to an open circuit.
System Notes — COOLING SYSTEM
The cooling system covers the radiator, water pump, thermostat, fan and fan drive, coolant hoses, clamps, the surge tank and the belts that drive it. It holds engine temperature inside the range where clearances and oil film stay correct. Failures are usually slow and then sudden: a hose softens and balloons before it bursts, a water pump seal starts weeping from the weep hole, a thermostat sticks partly open so the engine runs cold and burns more fuel. On construction sites the radiator also packs with dust and debris, which raises pressure across the core and finds the weakest hose or clamp first.
FAQ
Is 7H3937 the right part for my machine?
Match the part number on your old part, or send us your equipment serial number — WSTPARTS verifies fitment free of charge for CAT 3516B.
Genuine CAT vs direct replacement — what is the difference?
Genuine CAT covers three factory lines: New Genuine, Cat Reman (core exchange with core charge) and Cat Classic (brand-new economy line). OEM-equivalent direct replacements are non-CAT parts; grade and warranty are confirmed in the quotation.
Stock, shipping and warranty?
Lead time confirmed on request; we quote the fastest available option. Every order is covered by a warranty per quotation.
📞 Get a Quote: Contact the WSTPARTS parts team | Email: cat@wstparts.com
