12V Fuel Shut Off Solenoid J904630 – Model-Matched for CASE 580E

Verified Fitment Path — cross-reference checks across superseded numbers and connector variants ensure this stop solenoid mounts correctly on your exact CASE machine or Cummins engine.

Technical Specifications

Application Suitability

Why the Same Part Number Ships With Different Connectors

Variant differences under a single base number cause more fitment failures than wrong part numbers outright.

Cross-reference tables copied between sellers frequently carry forward errors from older listings. A superseded number like 3904630 may resolve to J904630 in one database but point to a different connector configuration in another. I once had a customer order based on a reference that matched his CASE 480E on paper, yet the plug orientation was set up for a 580E harness — the part was correct in every dimension except the one that mattered at the wiring loom. This 12V Fuel Shut Off Solenoid J904630 for CASE fitment cross reference work requires checking not just the number but the physical interface on your specific machine serial range [NEED_CITE: aftermarket solenoid variant identification practices for construction equipment].

Fitment Range Across CASE Construction and Agricultural Lines

The application list for this 12V Fuel Shut Off Solenoid J904630 spans from compact loader backhoes through large agricultural tractors and specialized equipment. CASE 480E, 480F, and their LL variants share common Cummins engine platforms, but the solenoid mounting position and wiring harness reach vary between machine generations. For the 580-series backhoe loaders — 580E through 580SK — the fuel pump body interface remains dimensionally consistent, yet connector pinouts shifted across production years. Tractors like the 8820 and 8830, and cotton pickers such as the 2022 and 2044, introduce further variation in how the solenoid sits relative to adjacent hydraulic lines.

Interface Verification Before You Commit

The most common mismatch on this stop solenoid involves three physical checkpoints: connector type and orientation, mounting flange bolt pattern, and plunger extension length. Brass alloy body dimensions are held to ±0.05 mm, matching the OEM mounting interface without shims or adapter plates. However, the electrical connector — whether a two-pin spade, a weatherproof molded plug, or a flying lead variant — must match the harness on your machine. I always ask buyers to photograph the existing connector and the fuel pump mounting face before confirming an order. When the nameplate is worn or painted over, the machine serial number alone is enough to narrow down which variant fits [NEED_CITE: equipment nameplate identification and serial-based parts lookup].

Reading the Specifications That Matter in the Field

The 12V DC coil with IEC 60034 Class B insulation is rated for continuous duty across –25°C to +85°C, covering cold-start conditions through sustained high-ambient operation. Response time under 120 ms ensures the fuel rack closes before the engine overspeeds during a runaway event. The hardened stainless steel plunger with PTFE coating resists the micro-abrasion caused by ultra-low sulfur diesel and biodiesel blends up to B20, while the SAE J1926 sealing gasket standard maintains integrity at the 10 bar test pressure. Actuation endurance exceeds 100,000 cycles, which translates to years of daily start-stop service in loader and trencher duty cycles.

What Happens When the Variant Is Wrong

A solenoid that physically bolts on but carries the wrong connector type forces the technician to cut and splice the wiring harness — introducing a moisture ingress point that eventually corrodes the terminal. A plunger that is even slightly short fails to fully retract the fuel rack, causing erratic idle or failure to shut down. The machine may appear functional at the bench but stall unpredictably under load. These are not catastrophic failures; they are the kind of intermittent faults that consume diagnostic hours and er confidence in the repair [NEED_CITE: intermittent electrical fault diagnosis in mobile diesel equipment].

Why Buyers Source This Stop Solenoid Through Us

Production on selected lines and qualified sourced supply both carry identical QC and warranty terms under one account. Eight product categories mean a complete fuel system service — solenoid, filters, seal kits, gaskets — ships as a single consignment. Minimum order is one piece, so a single emergency replacement does not require padding an order. Our Guangzhou warehouse holds stock on fast-failure items for immediate dispatch. Part identification works from a part number, a machine model, a photograph of the old solenoid, or a nameplate image. Cross-reference verification covers superseded numbers including 3904630 and 3943194 against J904630. Sample supply is available so you can confirm physical fitment on your machine before committing to a fleet-wide rollout. The technical team verifies compatibility and variant selection against your specific engine serial prefix.

Documentation & Verification

• Commercial invoice and packing list referencing J904630 and cross-reference numbers
• Part compatibility sheet confirming machine model, serial range, and connector type
• Dimensional inspection record covering flange pattern, plunger stroke, and body tolerance
• Warranty terms document specifying coverage period against manufacturing defects
• Packing photographs showing solenoid condition and protective packaging before dispatch
• HS code and customs documentation support for international shipment

Fitment Check Before Installation

• Compare mounting flange bolt spacing on the new solenoid against the fuel pump body before wiring
• Verify connector pin count and orientation matches the existing harness plug
• Check plunger extension length against the removed unit to confirm fuel rack engagement
• Test energize the solenoid with 12V DC to confirm plunger retraction before final mounting
• If any dimension or connector differs, halt installation and request cross-reference re-verification

Inquiry Guidance

Provide your machine model and serial number, or a photograph of the existing solenoid showing the connector and mounting face. If the nameplate is unreadable, a photo of the engine data plate or fuel pump casting number allows variant confirmation. For mixed fleets, a list of machine models lets us cross-reference which units share this solenoid and which require a different variant. Samples ship ahead of bulk orders for physical trial fitment.

Frequently Asked Questions

Q: How do I confirm this solenoid fits my specific CASE machine or Cummins engine? A: Send us the machine model and serial number, or a clear photograph of the existing solenoid's connector and mounting flange. We cross-reference against the J904630 fitment list and verify whether your specific production variant uses this configuration or a different connector type.

Q: Is the old number 3904630 still valid, or must I use J904630? A: The number 3904630 is listed as a superseded cross-reference for J904630 (reference only). In most applications they resolve to the same solenoid body, but production date and engine serial determine whether the connector variant also matches. We verify the substitution path before confirming your order.

Q: Why do some listings show the same part number but different connector types? A: A single base number can cover multiple machine generations with different wiring harnesses. The CASE 480E and 580E, for example, share the solenoid body but use different plug orientations. We confirm the correct variant by checking your machine serial range, not just the printed number.

Q: I only have a machine model, no readable part number — can you identify the right solenoid? A: Yes. The machine model and serial number are sufficient to narrow the correct variant from our fitment database. If the serial plate is missing, a photograph of the engine block casting number or the fuel pump body allows us to confirm compatibility and connector configuration.

Q: Can I get a sample to test fitment before ordering in quantity? A: Sample units are available for physical fitment checks before you commit to a bulk order. This is recommended for mixed fleets where machine variants span different production years. Confirm the sample mounts, connects, and functions correctly, then proceed with confidence for the remainder.