12V Stop Solenoid 1503ES-12S5SUC5S | Fast Dispatch Aftermarket

Stock Dispatch Ready — 12V Woodward-compatible stop solenoid 1503ES-12S5SUC5S leaves our Guangzhou warehouse within two working days after order confirmation.

Technical Specifications

Application Suitability

What Keeps a Machine Down While You Wait for the Right Stop Solenoid

A misread nameplate can turn a same-day fix into a multi-day standstill.

The 1503ES series carries several part number variants that differ only in voltage or pull-hold coil winding. Ordering the 24V version for a 12V system, or confusing the SA4562-T suffix with the SA-4920, means the solenoid arrives but will not energize correctly. I once watched a quarry crusher sit idle for three full shifts because a replacement solenoid was identified only from a grease-covered label that dropped the "S5SUC5S" tail section. The crew assumed it was a standard shutdown valve; it was actually configured for a specific Woodward governor build [NEED_CITE: Woodward 1503ES series variant identification procedures].

When a machine is already down, the bottleneck is rarely the part itself — it is confirming which variant you need and then getting it dispatched before the next shift starts.

Availability and Part Number Confirmation

The Stop Solenoid 1503ES-12S5SUC5S sits on our Guangzhou warehouse shelf as a stocked line item. Orders placed during business hours typically receive a dispatch confirmation and tracking reference within the same cycle. If your machine nameplate is worn, painted over, or partially illegible, a clear photograph of whatever characters remain — even just the equipment model — is enough for our technical team to verify the correct variant. We cross-check superseded numbers such as SA4562T and SA4850 to ensure the unit you receive matches the governor system currently installed.

How Fast It Reaches Your Site

From the moment an order clears, the Stop Solenoid 1503ES-12S5SUC5S is packed in an individual anti-static bag, nested in a molded foam insert, and boxed in reinforced cardboard — rated for courier and air freight handling. Courier dispatch from Guangzhou reaches most domestic and regional international destinations within two to five working days [NEED_CITE: international air freight transit times from southern China hubs]. Sea freight options exist for larger consolidated shipments, though for a single emergency replacement unit, express or air remains the practical choice. We provide the tracking number and a realistic arrival estimate at the time of quotation so there are no surprises once the machine is already standing still.

Electrical Behavior Under Real Operating Conditions

This solenoid is rated for 12V DC systems, which covers the majority of mobile equipment and generator sets running Woodward-based electronic governors. The coil must receive stable voltage to generate sufficient magnetic force for both the initial pull stroke and the subsequent hold position. Voltage drop across corroded wiring or undersized cables can prevent full actuation, so the fault sometimes lies in the harness rather than the solenoid itself. Compliance with SAE J1171 means the coil insulation is rated for the moisture and vibration environment typical of off-highway machinery. The ISO 8528-5 reference further confirms suitability for generator set applications where the governor demands rapid and repeatable shutdown response [NEED_CITE: ISO 8528-5 performance requirements for generating sets].

The Cost of Guessing the Wrong Variant

Sending a 24V unit into a 12V circuit leaves the solenoid underpowered — it may click but never fully stroke, leaving the fuel rack partially open and the engine refusing to shut down cleanly. Conversely, feeding 12V into a solenoid wound for 24V can overheat the coil rapidly, burning out the insulation and destroying a component that only arrived yesterday. Either scenario means a second round of downtime, a second freight charge, and a crew that has now lost patience with the parts supply chain. Confirming the exact suffix string before dispatch is a step that takes minutes but prevents days of idle equipment [NEED_CITE: electrical mismatch failure modes in diesel engine shutdown systems].

Why Source This Part Through XUNPO

Our Guangzhou warehouse keeps the 1503ES-12S5SUC5S on the shelf, not on a multi-week procurement list, so a single emergency unit ships without waiting to hit a minimum order threshold. Cross-reference verification covers superseded numbers like SA-4920 and SA4562-T, so even if your existing label shows an older designation we can confirm the current equivalent. Every unit ships with a compatibility sheet noting it is an aftermarket replacement for Woodward 1503ES series systems, not a genuine or brand-endorsed component. The same six-month warranty applies whether you buy one piece for an emergency repair or fifty for a fleet overhaul program. Our technical team remains available around the clock to read a photograph of your nameplate and confirm the fit before you commit.

Documentation & Verification

• Commercial invoice listing the exact 1503ES-12S5SUC5S designation and cross-reference numbers
• Compatibility sheet noting reference-only interchange codes for Woodward 1503ES systems
• Dimensional and electrical test record confirming 12V coil resistance before dispatch
• Six-month warranty certificate covering manufacturing defects
• Packing photograph showing anti-static bag and foam insert prior to box closure
• HS code declaration for customs clearance support

Stock, Shipping & Arrival

• Guangzhou warehouse stock enables same-cycle dispatch for in-stock 1503ES-12S5SUC5S units
• Express courier transit typically two to five working days depending on destination region
• Anti-static bag and molded foam packaging rated for air freight and courier handling
• Tracking number and estimated arrival date provided at quotation stage
• Consolidated freight available when combining with additional emergency spares

Get the Right Unit on the Next Truck

Send us the part number printed on your existing solenoid, a photograph of the equipment nameplate, or even a close-up of the connector and coil housing. We will confirm stock availability, verify the correct variant, and provide a dispatch and arrival timeline — all before you issue a purchase order.

Frequently Asked Questions

Q: Is the 1503ES-12S5SUC5S currently in stock and how soon can it ship? A: This stop solenoid is stocked in our Guangzhou warehouse and typically dispatches within two working days of order confirmation. Once shipped, courier transit to most regional destinations takes two to five working days. We provide tracking details and an estimated arrival date at the time of quotation.

Q: Can I order just one piece for an emergency repair? A: Yes. The minimum order is one piece, which is specifically intended for site-level emergency situations where a machine is already down. There is no requirement to meet a batch quantity before your order enters the dispatch queue.

Q: My nameplate is faded — can you still identify the correct solenoid? A: Send a photograph of whatever remains visible on the nameplate or a picture of the equipment model badge. Our technical team will cross-reference the visible characters against superseded and alternate numbers to confirm the exact variant your governor system requires.

Q: How long does delivery take to my region? A: Courier delivery from Guangzhou typically arrives within two to five working days for domestic and regional international destinations. The exact transit window depends on your location, and we quote the estimated arrival date alongside the freight option at the time of inquiry.

Q: What happens if the solenoid does not fit or has a defect? A: Every unit carries a six-month warranty against manufacturing defects. If a dimensional or electrical mismatch is confirmed upon arrival, we arrange a replacement dispatch as quickly as possible. Providing your machine model and old part photographs upfront minimizes this risk.