12V Stop Solenoid 3991167 for Cummins 4BT – Direct Replacement for Hyundai R130/R170

Product Specifications

Compatible Models

Tired of Engine Shutdown Failures? Get the Reliable 12V Stop Solenoid 3991167 for Your Cummins 4BT-Powered Hyundai R130/R170

Every unscheduled engine shutdown on a Hyundai R130 or R170 excavator costs operators hundreds to thousands of dollars per hour in idle time, labor rework, and missed deadlines. We’ve seen too many cases where counterfeit or low-tolerance stop solenoids failed mid-operation — causing unexpected stalling, repeated restart attempts, and even ECU error cascades. OEM parts take 3+ weeks to arrive, while generic replacements often lack proper coil resistance calibration or housing sealing integrity.

OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse

This 12V stop solenoid is engineered to match original Cummins 4BT specifications and certified for use in Hyundai R130/R170 excavators. Built by ISO 9001-certified factories and tested before shipment, it delivers consistent 12V engagement force and precise de-energized cutoff timing — critical during hydraulic load cycles and high-temperature operation. Our 10-year export experience across 120+ countries means we know exactly how this component behaves under real-world excavation, grading, and trenching conditions.

Where This Part Works

This solenoid operates in demanding environments: urban construction sites with frequent start-stop cycles, quarry loading operations under dust and vibration, and port-side material handling where reliability directly impacts crane and loader uptime. It controls fuel shutoff in the Cummins 4BT engine — a core safety and control function that must respond instantly at temperatures from -20°C to +85°C and withstand continuous mechanical shock up to 50G. A failure here doesn’t just stall the machine — it risks uncontrolled engine run-on or delayed shutdown during emergency procedures.

Engineering Details That Matter

The solenoid’s copper-clad aluminum coil is wound to exact 12V DC resistance tolerance (±5%) — ensuring stable magnetic pull-in force without overheating during repeated actuation. Its stainless steel plunger rod undergoes nitrided surface hardening (HV900+) for wear resistance against 500,000+ cycle life expectancy. The O-ring seal uses FKM fluoroelastomer rated to 150°C, preventing fuel leakage into the solenoid housing — a common cause of coil shorting in aftermarket units. Dimensional tolerances are held within ±0.05 mm to guarantee drop-in fit with original Cummins 4BT mounting flanges and linkage geometry.

The Real Cost of Wrong Parts

A $15 counterfeit solenoid may save upfront, but its inconsistent coil resistance leads to erratic shutdown response — increasing risk of post-shutdown diesel knock, injector wear, and premature governor damage. Industry data shows such failures raise total maintenance cost by 3.2× over 12 months due to secondary part replacement, diagnostic labor, and downtime penalties. This 3991167 stop solenoid meets ISO 4414 pneumatic/hydraulic component performance standards and is validated against Cummins’ own test protocol for solenoid dwell time and release lag. Choosing the right part isn’t about price — it’s about controlling total cost of ownership (TCO) across your fleet’s operational lifecycle.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually sealed in static-resistant pouch, mounted on molded anti-vibration foam inside rigid corrugated box
• In-stock items ship within 2–5 working days after payment confirmation
• Flexible logistics: DHL/FedEx/UPS express (3–7 days), air freight (7–12 days), or sea freight (25–40 days)
• Real-time tracking number provided upon dispatch, with proactive delivery updates
• MOQ is 1 piece — designed for urgent field repairs and small-batch maintenance

Get Your 12V Stop Solenoid 3991167 Now

Your Hyundai R130 or R170 shouldn’t sit idle waiting for a critical shutdown component. Send us your part number (3991167 or SA-4941-12), machine serial prefix, and required quantity — we’ll deliver a competitive quote within 24 hours. First-time buyers can request a sample for functional validation before bulk order. Every day delayed is a day of lost productivity and mounting rental or contract penalties.

Frequently Asked Questions