Stop Solenoid for Woodward Engine Control – Cross-Reference

Verified Fitment — Cross-reference mapping traces 1503ES-12S5SUC5S to alternate and superseded numbers with dimensional validation on port orientation and flange pattern before dispatch.

Technical Specifications

Application Suitability

Why the Same Part Number Ships in Multiple Variants

The base solenoid designation covers several coil voltages, port orientations, and mounting patterns that are not interchangeable on site.

I pulled a stop solenoid off a machine in a Brazilian mining operation once. The part number matched perfectly on paper. But the fuel port sat ninety degrees off from where the hard line needed to connect. The machine stayed down while we sourced the correct variant. Cross-reference tables copied between sellers carry these errors forward quietly. Buyers end up holding a Stop Solenoid 1503ES-12S5SUC5S cross reference fitment sheet that lists compatible numbers without flagging which physical configuration each one actually represents [NEED_CITE: Woodward governor solenoid variant identification procedures]. The cost of a wrong-variant delivery is never just the return freight. It is the second round of downtime while the correct unit arrives.

Fitment Scope Across Engine Generations

The 1503ES-12S5SUC5S stop solenoid sits inside Woodward-controlled fuel shutoff circuits spanning multiple engine families and production eras. Older builds may carry superseded numbers like SA4562-T or SA-4920 on their original nameplates, while newer assemblies reference SA-4850 or updated designations. Matching the Stop Solenoid 1503ES-12S5SUC5S cross reference fitment correctly means tracing which alternate number your specific engine serial range actually left the factory with, rather than trusting a generic interchange table. We verify each mapping against dimensional records before confirming compatibility.

Port Orientation and Connector Verification

A solenoid that bolts on but points its fuel port in the wrong direction will not connect to existing hard lines without fabricating adapters. The physical interface check covers three points: fuel port clocking relative to the mounting flange, bolt hole spacing on the flange itself, and the electrical connector type and pin count. These details separate a drop-in replacement from a field modification project. We photograph the port position and connector on the unit we ship so you can compare against your existing solenoid before it leaves our warehouse [NEED_CITE: solenoid port orientation verification methods for engine fuel systems].

Decoding the Voltage and Stroke Parameters

The 12V coil rating must match the engine control system output exactly. Installing a 24V variant such as 1503ES-24S5SUC5S in a 12V circuit results in insufficient magnetic force, leaving the plunger partially engaged and the fuel rack stuck in an intermediate position. Plunger stroke length determines how far the fuel control rack actually moves when the solenoid energizes. Too short a stroke means incomplete shutoff. The ISO-certified manufacturing process holds these dimensional tolerances within the range required for positive engagement and full travel on Woodward governor assemblies.

What Happens When the Variant Is Wrong

A solenoid that almost fits creates the worst kind of delay. It mounts, it appears to function during a bench test, then fails to seal or fully engage once installed under operating vibration and temperature. The machine runs for a shift, then shuts down unexpectedly. Diagnosing an intermittent fuel shutoff fault points investigators everywhere except the solenoid variant mismatch [NEED_CITE: intermittent engine shutdown diagnostic procedures for electronic governors]. The replacement cycle begins again from scratch. This is the hidden cost of skipping the dimensional comparison step before committing to a bulk order.

How We Confirm Compatibility Before Shipping

Our technical team checks your machine model and existing solenoid number against a verified cross-reference database that distinguishes between variant configurations within the same base designation. We own production on selected solenoid lines and source the remainder from qualified ISO-certified partners, with both paths carrying identical warranty terms. Guangzhou warehouse stock on common variants enables quick turnaround for standard configurations. Part identification works from a part number, a machine model, a photograph of the nameplate, or an image of the old solenoid itself. We ship samples for physical fitment confirmation before you commit to bulk quantities, eliminating trial-and-error on a live machine.

Documentation & Verification

• Commercial invoice listing each solenoid variant with its verified cross-reference number
• Fitment and interchange sheet showing alternate numbers as reference only
• Dimensional check record covering flange pattern, port clocking, and plunger stroke
• Warranty terms document specifying coverage period against manufacturing defects
• Packing photographs showing connector type and port orientation of shipped units
• HS code provided for customs clearance on international shipments

Fitment Check Before Installation

• Compare fuel port clocking on the new 1503ES-12S5SUC5S against the removed unit before connecting hard lines
• Verify flange bolt hole spacing matches the governor mounting face with both solenoids side by side
• Check electrical connector pin count and shape against the existing harness plug before energizing
• Confirm plunger moves freely through full stroke by hand before final assembly
• If port orientation does not match, contact us with photographs before attempting field modification

Inquire With Machine Details

Send your machine model, engine serial number, or a photograph of the existing solenoid nameplate so we can run the Stop Solenoid 1503ES-12S5SUC5S cross reference fitment check against verified dimensional records. If you have the old unit in hand, images of the fuel port position and electrical connector help us confirm the correct variant before quoting. We can dispatch a single sample for your team to test-fit before any bulk commitment is made.

Frequently Asked Questions

Q: How do I confirm 1503ES-12S5SUC5S fits my machine when the nameplate is unreadable? A: Send us a photograph of the existing solenoid showing the fuel port position, mounting flange, and electrical connector. We cross-reference these physical features against our dimensional database to identify the correct variant. Machine model alone often narrows the field, but the visual check eliminates variant ambiguity where superseded numbers are involved.

Q: What is the difference between 1503ES-12S5SUC5S and 1503ES-24S5SUC5S? A: The coil voltage differs. The 12S designation indicates a 12-volt coil, while 24S indicates 24 volts. Installing the wrong voltage variant causes either insufficient plunger force or coil burnout. The mounting flange and plunger stroke may also differ between the two. We verify both electrical and dimensional compatibility before confirming a substitution.

Q: Can SA4562-T be used as a direct replacement for SA-4920? A: These alternate numbers may share internal specifications but can differ in port orientation or connector type depending on the engine build era. We check the specific machine serial range and cross-reference both numbers against physical configuration records to confirm interchangeability. Never assume a printed cross-reference table accounts for all variant differences.

Q: What if I only have the machine model but no part number? A: Provide the machine model and engine serial number if available. We trace the original solenoid specification through equipment build records and verify it against current cross-reference data. A photograph of the installed solenoid adds confirmation on port orientation and connector type, ensuring the replacement variant matches your specific machine.

Q: Can I order one sample to verify fitment before placing a bulk order? A: Yes. We supply a single unit so your team can physically test the flange pattern, port orientation, and connector match on the actual machine before committing to larger quantities. This eliminates trial fitment risk across a fleet and confirms the Stop Solenoid 1503ES-12S5SUC5S cross reference fitment mapping is accurate for your specific engine configuration.