12V Fuel Shut Off Solenoid J904630 – Verified Fitment for CASE 580E

Fitment verified by serial cross-check — J904630 stop solenoid variants confirmed against your CASE 580E engine build before dispatch.

Technical Specifications

Application Suitability

Why the Same Part Number Ships in Four Variants

Variant identification prevents the machine from sitting apart while you wait for a replacement.

A 12V Stop Solenoid for CASE 580E / J904630 cross reference fitment check sounds straightforward until the old part is on the bench. The connector might be a two-pin spade on one build and a sealed three-pin plug on another, even though the catalog lists the same identifier. Spline tooth count on the pull rod, flange bolt spacing, and stroke length all shift between engine serial ranges. I have seen backhoe loaders in Indonesian job sites sit idle for weeks because the replacement solenoid had the wrong connector orientation — the wiring harness was too short to reach, and the machine could not shut off electrically. Cross-reference tables copied between sellers carry these errors forward, making serial-level verification the only reliable path [NEED_CITE: engine serial range part variant identification in aftermarket catalogs].

Variant Differences That Decide Fitment

The base identifier covers a wide production span across CASE backhoe loaders and Cummins-powered equipment. Within that span, the 12V Stop Solenoid for CASE 580E / J904630 cross reference fitment data splits into distinct builds. Some units use a bayonet-style connector that locks with a quarter turn; others rely on a push-fit Deutsch plug. The pull rod diameter and travel distance must match the fuel pump shut-off fork precisely, or the engine either fails to stop or stalls during operation. Providing the equipment serial number and engine serial allows the technical team to narrow the variant down before anything ships.

Connector and Flange Verification Points

Before installation, the physical interface tells you whether the part truly fits. The connector pin count and keying groove position must match the female plug on the machine harness — forcing a mismatched plug damages terminals and creates intermittent faults. The mounting flange bolt pattern and gasket face diameter need to seat flush against the pump housing. Stroke length of the solenoid rod should equal or slightly exceed the original measurement to ensure full fuel cut-off. These checks take minutes on the bench and prevent a full teardown when the machine is already on a deadline [NEED_CITE: electrical connector keying standards for mobile diesel equipment].

Spec Sheet Read in the Field

The 12V rating matches standard machine electrical systems on most CASE and Cummins applications, but voltage tolerance matters. A solenoid operating at the low end of battery output during cranking still needs to pull the rod fully — otherwise the engine may start but refuse to stop when the key is turned off. The ISO 9001 production standard covers dimensional consistency across batches, meaning the flange thickness and bolt hole spacing stay within tolerance. The new aftermarket condition indicates fresh coil windings with no heat history, which affects magnetic pull force and long-term reliability under continuous duty cycles.

The Cost of a Mismatched Variant

When a stop solenoid arrives with the wrong connector, the choices are bad. Cutting and splicing the harness voids warranty on the wiring and introduces corrosion points in a high-vibration, high-moisture environment. If the flange bolt pattern is off by a few millimeters, drilling new holes in the pump housing compromises structural integrity. A pull rod that is too short leaves the fuel rack partially open, causing the engine to run on after shutdown — a dangerous condition on any job site. These are not catalog errors you can work around; they require a return, a re-order, and more downtime [NEED_CITE: diesel engine run-on hazards from incomplete fuel shut-off].

Why Source This Part Here

Our own production lines and qualified sourced partners operate under one account and one warranty policy, so you are not managing separate claims for different supply origins. The eight product categories mean a complete engine auxiliary order — solenoids, gaskets, filters, and fasteners — consolidates into one shipment. Orders start at a single piece, which matters when one machine is down and you need confirmation before committing to bulk. Our Guangzhou warehouse stocks common variants for fast identification and dispatch. Part identification works from the number, the machine model, a photograph, or a nameplate image, and our technical team runs cross-reference verification covering superseded and alternate numbers. Sample supply is available so you can physically confirm fitment before placing the full order.

Documentation & Verification

• Commercial invoice listing J904630 with machine model and variant code
• Cross-reference sheet mapping 3904630 and superseded numbers (reference only)
• Dimensional check on flange spacing and connector type before dispatch
• Warranty terms covering manufacturing defects for 3-12 months
• Packing photographs showing the exact units in your consignment
• HS code and customs documentation support for cross-border shipment

Fitment Check Before Installation

• Compare connector pin count and keying position against the original harness plug
• Measure pull rod stroke length and match against the fuel pump fork travel
• Verify flange bolt pattern spacing with a caliper before removing the old unit
• Test electrical continuity and coil resistance on the bench before mounting
• Confirm the solenoid engages and retracts smoothly at 12V with no binding
• If any dimension mismatches, contact the technical team before forced installation

Request Fitment Confirmation

Send the machine model, equipment serial number, and a clear photograph of the old solenoid connector and nameplate. The technical team will cross-check against known variant builds and confirm which version of the 12V Stop Solenoid for CASE 580E / J904630 cross reference fitment matches your specific unit. If the nameplate is worn or painted over, a photo of the engine block casting number is enough to narrow it down. For fleet buyers, provide the full machine list so we can verify compatibility across the entire group before quoting.

Frequently Asked Questions

Q: How do I confirm which J904630 variant fits my specific machine? A: Provide the equipment serial number and engine serial number. Our technical team cross-references these against known production variants, checking connector type, flange pattern, and pull rod stroke. If the nameplate is unreadable, a photograph of the old solenoid and the engine block casting number allows identification. This verification happens before any order is confirmed.

Q: Can I use J904630 to replace a part marked 3904630 on my old solenoid? A: These numbers cross-reference to each other (reference only), but the physical variant must still match your engine build. Connector style, bolt pattern, and stroke length may differ between production batches. We verify the specific variant against your machine serial to confirm whether the substitution is valid for your exact unit.

Q: Why does the same part number have different connector shapes? A: Equipment manufacturers change wiring harness suppliers and electrical architectures across production years. The base part number stays the same while the connector evolves from spade terminals to sealed plugs. The engine serial range determines which connector variant was installed at the factory, and we match against that range.

Q: My machine nameplate is gone — can I still identify the correct part? A: Yes. A photograph of the old solenoid, the engine block casting number, or the fuel injection pump model allows our team to narrow the fitment. Machine model alone gives a starting range, and additional visual details confirm the exact variant needed for your equipment.

Q: Can I order one sample before placing a bulk order for my fleet? A: Single-piece samples are available for fitment confirmation. Install the sample on one machine, verify connector match, flange alignment, and pull rod operation, then proceed with the full fleet order once fitment is proven. This prevents bulk orders of incorrect variants.