GAOSHUN Kohler 25-403-39-S Voltage Regulator Rectifier 25-403-32-S
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Description
xOverview and compatibility
Meet the GAOSHUN voltage regulator rectifier crafted for Kohler charging systems. This compact, sturdy unit is designed to align with Kohler parts 25-403-39-S and 25-403-32-S, and it serves as a modern replacement for older numbers. When installed, it supports a clean 12-volt output across a 20-30 amp range, helping your engine’s electrical system stay steady through the start sequence and everyday operation. The result is a more reliable electrical backbone for lighting, gauges, and accessory loads on compatible Kohler engines.
- Fits Kohler Part # 25-403-39-S and 25-403-32-S
- Replaces older parts: 25-403-08-S, 25-403-20-S, 25-403-21-S
- Compatible with Kohler engines CH730-0165, CH730-0170, ECH749, ECV740 and related models
- Electrical spec: 20-30 amp, 12 volt
- Package includes: 1 regulator, 1 cable, 1 screw, 1 gasket
What to expect during installation
Designed for straightforward replacement, this regulator ships with essential hardware, helping you refresh a key electrical component without hunting for compatible parts. The included gasket and mounting hardware support a snug, vibration- resistant fit, while the cable ensures a tidy routing path in typical Kohler layouts.
- Includes: regulator, cable, screw, gasket
- Easy swap for compatible Kohler engines
- Heat and vibration are common challenges in small engines; a compact, durable housing helps manage both
Real-world use and benefits
In everyday riding mower or generator setups, this regulator acts behind the scenes to help stabilize the charging circuit. You may notice steadier electrical behavior during peak load, consistent lighting, and smoother operation of ancillary electronics. Results depend on the overall health of the charging system, the engine condition, and proper installation.
The design emphasizes reliability and compatibility, with a compact form that fits into tight engine compartments and a finish that resists the bumps and heat of outdoor use. While it does not promise guaranteed outcomes, it is positioned as a practical upgrade for users seeking a modern replacement that aligns with Kohler specifications.
Why choose GAOSHUN
- Replacement part aligned with Kohler specs for seamless compatibility
- Clear documentation of part numbers and engine compatibility
- Rugged construction designed to withstand vibration and heat in outdoor equipment
If you operate a Kohler-powered machine that relies on a stable 12-volt supply, this GAOSHUN regulator offers a practical path to refreshing the charging system without overhauling the entire electrical setup. Consider it as a thoughtful upgrade option within the Kohler parts ecosystem.
FAQ
Q: Which Kohler engines is this voltage regulator compatible with?
A: Designed for Kohler CH730-0165 and CH730-0170 engines, plus ECH749 and ECV740 family models, including related 25-403-39-S/25-403-32-S parts.
Q: What is included in the package?
A: 1 voltage regulator, 1 cable, 1 mounting screw, and 1 gasket.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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