Engine Auxiliary Components
12V Stop Solenoid for Cummins 4BT 6BT – In Stock Fast Dispatch
ISO Certified Quality Assured
2-5 Day Ship Fast Dispatch
3-12 Mo. Warranty
Engine Auxiliary Components 12V 3930658 Cummins 4BT 6BT

12V Stop Solenoid for Cummins 4BT 6BT – In Stock Fast Dispatch

3930658 Stop Solenoid, 12V, 50,000+ cycles — replacement for Cummins 4BT and 6BT diesel engines with IP65-rated die-cast aluminum housing and stainless steel plunger rod.

  • Over 1,200 units stocked in our Guangzhou warehouse for immediate same-day dispatch
  • Single-piece MOQ supports urgent single-machine breakdown repairs
  • Fitment confirmed from engine serial number, worn part number, or photograph when nameplate is unreadable
  • Express, air, and sea freight options with transit timing quoted before you commit

Ships from stock today — arrival window confirmed at quote for your destination.

Key Highlights

  • Fits CAT, Komatsu, Hitachi, Volvo, Hyundai, Doosan, Kobelco, Sany, XCMG & more
  • Sourced from ISO-certified factories with strict QC inspection
  • MOQ = 1 piece · In-stock items ship in 2-5 working days
  • 3-12 month warranty · 24-hour quotation guarantee
Ships from Guangzhou
120+ countries served
MOQ: 1 piece
Quote in 24 hours

Stock Ready Now — Over 1,200 units of this 12V stop solenoid sit on our Guangzhou warehouse shelf today, picked, tested, and boxed the same day an order clears.

Technical Specifications

Parameter Value
Part Number 3930658
Cross-Reference 3932529, SA-4756-12, SA475612, 3939700, SA-4891-12, SA489112 (reference only)
Machine Fitment Cummins 4BT, 6BT diesel engines
Product Type Stop Solenoid
Voltage 12V
Operating Voltage Range 10–14 VDC
Coil Resistance 12.2–12.8 Ω at 20°C
Engagement Time <45 ms
Endurance 50,000+ cycles
Plunger Rod Material Stainless steel with nitride surface hardening (HV950)
Housing Material Die-cast aluminum
IP Rating IP65
Dimensional Tolerance ±0.05 mm on mounting flange holes and shaft diameter
Condition New Aftermarket
Warranty 6 months against manufacturing defects
MOQ 1 piece
Standards ISO 9001, ISO 4414

Application Suitability

Failure Symptom Replacement Urgency
Engine cranks but will not shut down via key switch Immediate — machine cannot be left unattended
Solenoid clicks repeatedly without holding plunger Same-day — coil thermal breakdown imminent
Intermittent shutdown on rough terrain High — loose internal contact worsens with vibration
Visible corrosion on solenoid housing terminals Scheduled — moisture ingress progressing toward coil short
Burnt smell from engine bay near fuel pump Immediate — insulation failure already underway

When the Machine Stops and the Part Is Not on the Shelf

A 12V Stop Solenoid for Cummins 4BT 6BT in stock fast shipping means nothing if the supplier still needs to confirm availability after payment. We confirm stock status and pick-window within the hour, not the day.

Workshops across the Yangtze Delta construction belt have learned the hard way: a machine already sitting on the bench with the fuel shutoff circuit open loses money every hour it waits. The typical aftermarket inquiry chain — email sent, reply next morning, stock check another half day — burns through two working days before a single part is boxed [NEED_CITE: aftermarket parts lead time impact on equipment downtime]. Meanwhile the rental meter is running and the contractor is calling.

12V Stop Solenoid for Cummins 4BT 6BT showing die-cast aluminum housing and stainless steel plunger rod

How Fast the Part Actually Leaves

Our Guangzhou warehouse holds this 12V Stop Solenoid for Cummins 4BT 6BT in stock fast shipping as a standing inventory item, not a made-to-order line. Orders placed before the afternoon cut-off are picked from shelf, tested for coil resistance within the 12.2–12.8 Ω range, and handed to the courier the same working day. Weekend and holiday requests are queued for next-morning dispatch with tracking numbers sent automatically.

What the Transit Clock Really Looks Like

Express carriers (DHL, FedEx, UPS) move a single-piece carton from Guangzhou to most Southeast Asian and Middle Eastern job sites within a few business days, with door-to-door tracking visible from the moment the label prints. Air freight serves larger consolidated shipments where a workshop is combining this solenoid with filters, gaskets, and seal kits on the same pallet. Sea freight applies when a fleet operator is restocking the regional parts cage and arrival in several weeks is acceptable. We quote estimated transit windows at inquiry stage, so the site supervisor knows whether the excavator comes back online before the next pour or the next shift [NEED_CITE: express freight transit benchmarks for construction parts].

Reading a Worn Nameplate in Bad Light

Cummins 4BT and 6BT engines working in mining pits or marine auxiliary rooms often have nameplates painted over, sandblasted, or corroded past readability. Our identification workflow accepts a clear photograph of the existing solenoid — housing shape, terminal count, mounting flange hole spacing — and matches it against cross-reference entries including 3932529, SA-4756-12, and SA-4891-12 (reference only). No more guessing between 12V and 24V variants or waiting for a part number to be deciphered.

Close-up of mounting flange hole spacing and terminal connector on Cummins 4BT stop solenoid

The Real Cost of Getting the Wrong Solenoid

A stop solenoid that physically bolts on but carries the wrong coil resistance will overheat within a few hundred cycles, welding the plunger open or burning out the winding entirely. The machine may shut down normally for a few weeks, then fail to restart at the worst possible moment — mid-pour, mid-trench, mid-shift. The second replacement then costs not just the part but the return freight, the second round of labor, and the credibility hit with the equipment owner [NEED_CITE: electrical component mismatch failure patterns in diesel auxiliary systems]. Sending a photograph before ordering collapses this risk to near zero.

Why Buyers Route Emergency Orders Here

This solenoid ships under the same warranty and quality terms regardless of whether it came off our own production line or a qualified ISO-certified partner — one account, one standard, no fine print. Guangzhou warehouse stock on common fast-failure items like this 12V Stop Solenoid for Cummins 4BT 6BT means a single piece leaves today without waiting for a production batch. Part identification from a number, a machine model, or a blurred nameplate photo eliminates the back-and-forth that stalls other suppliers. Sample units ship for fitment confirmation before a fleet buyer commits to bulk quantities.

Documentation & Verification

  • Commercial invoice listing each cross-reference number for customs clearance accuracy
  • Part compatibility sheet confirming 4BT and 6BT fitment with engine serial ranges noted
  • Coil resistance test record showing measured ohm value before dispatch
  • Six-month warranty terms covering manufacturing defects with photo-based claim process
  • Packing photograph of sealed anti-static bag and outer carton before handover to courier
  • HS code and customs documentation support for express and air freight lanes

Stock, Shipping & Arrival

  • Current shelf count confirmed live at inquiry, not pulled from a static catalog page
  • Express courier transit window quoted by destination zone before order confirmation
  • Single-piece carton sized and padded for courier handling without secondary repacking
  • Tracking number issued same day as pick, with status alerts at departure and arrival nodes
  • Weekend orders queued and dispatched first thing Monday with no extra handling surcharge

Tell Us What You Are Holding

Send the existing solenoid part number if readable, or a photograph showing the housing profile, terminal layout, and mounting flange. Include the engine model — 4BT or 6BT — and, if available, the engine serial number. We will reply with confirmed stock status, the dispatch window, and estimated arrival based on your chosen freight method.

Frequently Asked Questions

Q: Is this 12V stop solenoid in stock and when can it ship? A: Over 1,200 units are held in our Guangzhou warehouse as standing inventory. Orders confirmed before the afternoon cut-off are picked, resistance-tested, and handed to the courier the same working day. Weekend orders are queued for Monday morning dispatch with tracking issued immediately.

Q: Can I order just one piece for an emergency repair? A: Yes. The minimum order is one piece, specifically because field breakdowns rarely need a bulk quantity. A single solenoid ships in its own carton via express courier, sized for safe transit without repacking, so the machine gets back to work without waiting for a larger order to consolidate.

Q: How do I confirm fitment if the nameplate is worn or unreadable? A: Send a clear photograph of the existing solenoid showing the housing shape, terminal count, and mounting flange hole spacing. Our team cross-checks these visual cues against the full reference list — including superseded numbers — and confirms which variant fits your specific 4BT or 6BT build.

Q: What are the shipping options and estimated arrival times? A: Express carriers (DHL, FedEx, UPS) deliver a single carton to most regions within several business days. Air freight suits larger consolidated orders, and sea freight fits planned restocking. We quote estimated transit windows at inquiry based on your destination and chosen method.

Q: What happens if the part arrives and does not fit? A: The six-month warranty covers manufacturing defects, and our pre-shipment photo verification process catches most fitment mismatches before dispatch. If an incorrect variant still arrives, we arrange replacement shipment promptly upon receiving photographs showing the discrepancy.

Compatible Brands & Models

CAT
Komatsu
Hitachi
Volvo
Hyundai
Doosan
Kobelco
Sany
XCMG
Liebherr
JCB
Case

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.

Shipping Information

  • In-Stock Items: Dispatched within 2-5 working days from Guangzhou warehouse
  • Shipping Methods: DHL, FedEx, UPS, sea freight, air freight -- flexible options for all destinations
  • Coverage: Ships to 120+ countries worldwide with real-time tracking
  • MOQ: 1 piece -- no minimum order requirement

Warranty & Quality

  • Warranty: 3 to 12 months depending on part type
  • QC: Strict quality inspection at ISO-certified partner factories
  • Samples: First-time buyers can request samples before bulk orders
  • Support: 24/7 post-delivery technical assistance via WhatsApp & email
Get a Fast Quote

Inquire About This Product

Fill in your details and we'll respond within 24 hours with a competitive quote.

Our Response Guarantee
  • Part verification: within 2 hours
  • Full quotation: within 24 hours
  • Support available 24/7 via WhatsApp
10+
Years Export
10K+
SKUs Available
120+
Countries Served
24/7
Expert Support