Get your Cummins 4B3.9 or 6BT5.9 engine back to optimal operating temperature quickly with this 3917324 thermostat kit. The precision-engineered thermostat maintains consistent coolant flow, preventing overheating and reducing costly downtime during critical repairs.
| Parameter | Details |
|---|---|
| Part Name | Thermostat with Gasket Bushing |
| Part Number | 3917324 (Thermostat), 3920336 (Gasket), 3923331 (Bushing) |
| Brand | FridayParts |
| Compatible Engine Brand | Cummins |
| Engine Compatibility | 4B3.9, 4BT3.9, 4BTA3.9, 6B5.9, 6BT5.9, 6BTA5.9 |
| Condition | New Aftermarket |
| Warranty | 3-12 months against manufacturing defects |
| Brand | Applicable Engine Models |
|---|---|
| Cummins | 4B3.9, 4BT3.9, 4BTA3.9, 6B5.9, 6BT5.9, 6BTA5.9 |
Equipment downtime costs construction fleets $800-$3,000 per day. Waiting 2-4 weeks for OEM Cummins thermostat parts or installing counterfeit components that fail prematurely only makes the problem worse. When your Cummins 6BT5.9 engine overheats in the middle of a mining operation or port logistics job, you need a reliable replacement part—fast.
Our Thermostat with Gasket Bushing 3917324 solves your urgent repair needs with parts that meet OEM specifications. Backed by 10 years of export experience and partnerships with ISO-certified factories, we ensure each component undergoes rigorous pre-shipment testing. Unlike generic parts that cause repeated failures, our 3917324 thermostat maintains precise temperature regulation, critical for protecting Cummins 4B3.9 and 6BT5.9 engines in high-load applications like excavator operation and heavy equipment fleets.
This thermostat assembly plays a vital role in engine cooling systems across construction, mining, and agricultural machinery. Whether your equipment operates in dusty quarry environments or humid tropical worksites, the 3917324 regulates coolant flow to prevent overheating during prolonged idling or full-throttle operation. Proper temperature control directly impacts fuel efficiency, oil viscosity, and overall engine lifespan—making this part indispensable for fleet managers and repair shops.
The 3917324 thermostat features a heat-responsive valve calibrated to open at the exact temperature required for Cummins 4BTA3.9 and 6BTA5.9 engines. The included 3920336 gasket ensures a leak-free seal, while the 3923331 bushing provides secure mounting—eliminating common failure points in aftermarket assemblies. Manufactured from high-temperature resistant materials, this kit withstands the extreme thermal cycles of heavy-duty diesel engines, delivering consistent performance where generic parts fail.
Choosing an inferior 6BT5.9 thermostat replacement may save $20 upfront but can cost $2,000+ in secondary engine damage. Counterfeit parts often have imprecise temperature settings that cause engine overheating or incomplete warm-up, leading to increased wear on pistons, cylinder heads, and turbochargers. Our ISO-certified 3917324 assembly meets OEM tolerances, reducing long-term maintenance costs and ensuring your Cummins engine operates at peak efficiency.
We source exclusively from ISO 9001-certified manufacturers, with each thermostat undergoing incoming material inspection and functional testing before shipment. Our 10,000+ SKU warehouse in Guangzhou stocks this Cummins repair kit for immediate dispatch, supporting your urgent maintenance needs with 2-5 day shipping. Backed by a 3-12 month warranty and 20+ technical experts available 24/7, we provide the reliability that independent repair shops and fleet operators demand.
Don’t let a failed thermostat keep your Cummins-powered equipment offline. Send us your part number (3917324), engine model, and quantity today for a competitive quote within 24 hours. First-time customers can request sample testing to verify quality, and our technical team is available to confirm compatibility with your 4B3.9 or 6BT5.9 engine. The sooner you order, the sooner your machinery returns to productive operation.
Q: Is this an OEM Cummins part or aftermarket replacement?
A: This is an OEM-equivalent aftermarket part, manufactured by ISO-certified factories to meet Cummins specifications.
Q: How can I confirm this thermostat fits my engine?
A: Provide your engine model (e.g., 6BT5.9) or serial number, and our technical team will verify compatibility within 2 hours.
Q: What warranty coverage do you offer?
A: All parts come with a 3-12 month warranty against manufacturing defects. We provide free replacements for verified quality issues.
Q: What is the minimum order quantity?
A: We accept minimum orders of 1 piece, ideal for emergency repair situations.
Q: How quickly will my order ship?
A: In-stock items ship within 2-5 working days. Express shipping options are available for urgent requirements.
Q: Can I request a sample before placing a bulk order?
A: Yes, first-time customers can request sample testing to validate quality and compatibility before larger purchases.
Ready to order or need a quote?
Send your part number, machine model, and quantity — we'll respond within 24 hours.
WhatsApp: +86 13316055942 | Email: talos@xunpojx.com
Not sure if this part fits your machine? Send us your machine model number and serial number via WhatsApp or email -- our specialists will verify compatibility within 2 hours.
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