Stop Solenoid 1502-12A2U1B2 1500-2114 – OE Interchange for Woodward 12V

Cross-Reference Verified — Each stop solenoid 1502-12A2U1B2 / 1500-2114 is matched against machine model, connector type, and mounting pattern before dispatch.

Technical Specifications

Application Suitability

Why the Same Part Number Ships in Several Variants

A stop solenoid 1502-12A2U1B2 may look identical across listings, but variant differences in connector pin-out, flange bolt spacing, and actuator stroke length separate a correct fit from a costly return.

Over the years I have seen cross-reference tables copied between sellers with errors carried forward, leading buyers to order a solenoid that matches the number but not the machine. One mining contractor in Brazil ordered a replacement based on the manual reference, only to find the spline tooth count differed from the original — the machine sat idle while the correct variant was identified and shipped [NEED_CITE: aftermarket cross-reference accuracy in fuel system components]. Superseded part numbers add another layer: an older reference may no longer map to the current production variant, and without verifying physical dimensions against the removed unit, the mismatch is discovered only at the workbench.

Fitment Range and Serial Range Verification

The stop solenoid 1502-12A2U1B2 and its alternate reference 1500-2114 cover a range of Woodward 12V fuel control applications, but machine serial range determines which variant actually fits. Engine generations within the same model family sometimes switched governor configurations mid-production, meaning a solenoid that fits an early-build machine may not seat correctly on a later-build unit with a revised fuel pump. Verification starts with the machine model and engine serial, then moves to physical comparison: connector type, mounting flange dimensions, and actuator shaft engagement depth.

Connector, Flange, and Port Position Confirmation

The interface details determine whether a Woodward-compatible stop solenoid bolts on and functions without modification. Connector pin configuration varies between two-pin and three-pin layouts, and plugging a mismatched harness forces a rewiring job on site [NEED_CITE: electrical connector standardization in mobile equipment fuel systems]. Mounting flange bolt hole spacing must match the existing bracket within tight tolerances — even a small deviation prevents the solenoid from seating flush against the fuel pump body. Port position relative to the fuel inlet affects hose routing, and a rotated port forces an awkward bend that stresses the fitting over time.

Voltage, Duty Cycle, and Actuator Response

The 12V rating on this stop solenoid defines the electrical system it is designed to operate within. Running a 12V solenoid on a 24V system — common in larger excavators with dual-battery configurations — will overheat the coil and cause premature failure. The actuator must move the fuel rack to the stop position within the response window the governor expects; a sluggish solenoid delays engine shutdown, which matters most during an emergency stop scenario. ISO-certified manufacturing ensures coil winding consistency and armature travel fall within the tolerance band the Woodward governor was calibrated for [NEED_CITE: solenoid response time requirements in engine governor systems].

The Hidden Cost of a Variant Mismatch

Ordering a stop solenoid that matches the part number but not the physical variant means the machine stays down while the return ships out and the correct unit arrives. In remote mining or construction sites, that delay stretches from days into weeks when freight logistics are involved. A solenoid that bolts on but has the wrong actuator stroke may partially close the fuel rack instead of fully shutting it — the engine idles roughly or fails to stop on command, creating a safety issue the operator may not notice until an emergency arises [NEED_CITE: fuel rack shutdown verification procedures for diesel engines]. The cost of the wrong part is small; the cost of the machine sitting idle or running uncontrolled is not.

Why Source This Solenoid Through XUNPO

Our own production lines and qualified sourced supply carry identical QC standards and warranty terms, so you receive consistent quality regardless of which facility fulfills your stop solenoid 1502-12A2U1B2 order. Eight product categories sit under one account, meaning a complete fuel system job — solenoid, filters, gaskets, seal kits — ships as a single consignment rather than split deliveries. Minimum order is one piece, so an emergency single-unit replacement moves as fast as a fleet-level bulk order. Cross-reference verification covers superseded numbers like 1500-2114 and alternate formats like 150212A2U1B2, catching mapping errors before the part leaves our Guangzhou warehouse. A sample unit is available for trial fitment before you commit to a larger quantity, eliminating the guesswork that causes the downtime described above.

Documentation & Verification

• Commercial invoice and packing list referencing your machine model and cross-reference number
• Part compatibility sheet confirming fitment against your specific Woodward governor variant (reference only)
• Dimensional inspection record covering flange bolt spacing, connector pin-out, and shaft travel
• Warranty terms document stating coverage period and claim procedure
• Packing photographs showing the solenoid condition and labeling before crate closure
• HS code and customs classification support for cross-border clearance

Fitment Check Before Installation

• Compare the bolt hole pattern on the new solenoid flange against the removed unit before unboxing the harness connector
• Measure actuator shaft extension length and confirm it matches the original within visible tolerance
• Verify the connector pin count and keyway orientation match the machine wiring harness plug
• Perform a bench energize test at 12V to confirm full actuator travel before mounting to the fuel pump
• If any dimension or interface does not match, halt installation and contact the technical team for variant re-identification

Requesting a Fitment Verification

Provide the machine model, engine serial number, or a clear photograph of the existing solenoid nameplate and connector. If the nameplate is worn or painted over, a photograph of the mounting flange and harness plug allows identification through physical feature matching. The technical team will return a confirmed cross-reference and variant match before any order is processed.

Frequently Asked Questions

Q: How do I confirm this stop solenoid fits my Woodward-equipped machine? A: Send the machine model and engine serial number, or a photograph of the existing solenoid showing the nameplate, connector, and mounting flange. The technical team verifies cross-reference 1500-2114 and alternate numbers against your specific governor variant, confirming bolt pattern, pin configuration, and actuator stroke before the order ships.

Q: Are 1502-12A2U1B2 and 1500-2114 interchangeable, or do they cover different variants? A: Both numbers reference the same functional stop solenoid for Woodward 12V systems, but they may map to different production variants with distinct flange patterns or connector types. Physical comparison against your removed unit is necessary to confirm which variant your machine requires. A sample unit can be supplied for trial fitment before bulk commitment.

Q: The old part number on my solenoid is no longer listed — can the alternate number replace it? A: Superseded numbers are common in Woodward fuel system components as production configurations update over time. The cross-reference verification covers discontinued and alternate references, but the replacement must still be checked against your machine's physical interfaces — connector pin-out, flange spacing, and shaft travel — to confirm fitment.

Q: I only have the machine model, no readable part number — can you identify the correct solenoid? A: Yes. A photograph of the machine nameplate, engine data plate, or the solenoid mounting area allows the technical team to narrow down the applicable Woodward governor variant. From there, physical feature matching against known configurations identifies the correct stop solenoid without needing the original part number.

Q: Can I order a sample to test fitment before placing a larger order? A: A single sample unit of stop solenoid 1502-12A2U1B2 can be dispatched for bench fitment testing. This confirms bolt pattern alignment, connector compatibility, and actuator engagement with your specific fuel pump before you commit to a fleet-level quantity, eliminating the risk of a bulk order that does not fit.