Alternator 5H937-42700 Fits for Kubota D1503 Engine KX121-2 KX161-2 L2900DT L3010F L3710DT L4200DT
Alternator 5H937-42700 Fits for Kubota D1503 Engine KX121-2 KX161-2 L2900DT L3010F L3710DT L4200DT is backordered and will ship as soon as it is back in stock.
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Powering 10,000+ Commercial Fleets
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One Year Warranty
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Easy 60-day Return
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Expert support & Fitment Guarantee
Description
Description
Alternator 5H937-42700 – Replacement for Kubota D1503 Engine KX121-2 KX161-2 L2900DT L3010F L3710DT L4200DT
Aftermarket alternator engineered for reliable electrical power generation and consistent charging system performance in Kubota D1503 diesel engine applications across KX-series excavator, L-series tractor, and M-series tractor platforms. Precision-manufactured components ensure drop-in compatibility with correct fitment.
Technical Specifications
- Part Numbers: 5H937-42700, 5H93742700
- Condition: New, aftermarket replacement
- Function: Generates DC electrical output to charge the battery and power the electrical systems of Kubota D1503-powered excavators and tractors during engine operation, maintaining continuous power supply for ignition, lighting, instrumentation, and auxiliary electrical loads
Equipment Compatibility
Note: Compatibility is provided for reference. Please verify against your part number before ordering.
Fits the Following Applications:
- Kubota Engine: D1503
- Kubota Excavator: KX121-2, KX161-2
- Kubota Tractor: L2900DT, L2900DT-GST, L2900F, L3010DT, L3010F, L3010GST, L3010HST, L3300DT, L3300DT-GST, L3300F, L3410DT, L3410GST, L3410HST, L35, L3600DT, L3600DT-GST, L3710DT, L3710GST, L3710HST, L4200DT, L4200DT-GST, L4200F, L4200F-GST, L4310DT, L4310F, L4310GST, L4310HST, L4610DT-GST, L4610DT-HST, L48, M4700, M4700DT, M5400, M5400DT, M5400DT-N
Why Choose This Alternator
The alternator is a critical electrical generation component in your Kubota D1503-powered machine — it continuously charges the battery and powers all electrical systems that keep your excavator or tractor operating reliably through long work days in the field, on the job site, or in the yard. A failed or underperforming alternator results in battery drain, electrical system faults, loss of instrumentation, and ultimately a machine that won’t start — disrupting planting, harvesting, excavation, and landscaping operations where every hour of uptime counts. This replacement unit delivers:
- Reliable electrical output – Engineered to meet the voltage regulation, amperage output, and connector specifications of Kubota D1503 engine charging systems across KX-series excavator and L-series and M-series tractor platforms
- Exact-fit installation – Direct replacement with correct mounting configuration, pulley interface, and electrical connections to match Kubota machine specifications without modification
- Durable construction – Built to withstand continuous electrical generation, vibration, dust, moisture, and the demanding duty requirements of Kubota excavator and tractor operation in agricultural, construction, and landscaping environments
- Cost-effective solution – Aftermarket quality at a fraction of dealer pricing
Package Contents
- 1 × Alternator 5H937-42700
Essential for Kubota D1503 engine charging system maintenance and alternator replacement across KX121-2, KX161-2 excavators and L2900, L3010, L3300, L3410, L3600, L3710, L4200, L4310, L4610, L48, M4700, and M5400 tractor applications. Keep your Kubota machine delivering reliable electrical power and full performance on every operation.
1 Year Warranty
1 Year Warranty
Fab Heavy Parts is excited to offer a 12-month warranty on all new replacement/aftermarket parts starting from your original purchase date.
Enjoy peace of mind with Fab Heavy Parts!
For more warranty details, please check out our warranty policy.
Fast Delivery
Fast Delivery
Estimated delivery time 3-6 workdays
No Core Charge
No Core Charge
We don't have a core charge for any products.
Frequently Asked Questions
Shipping and Delivery
What countries do you ship to?
What countries do you ship to?
We can ship to these countries:
Indonesia, Japan, Malaysia, Philippines, Singapore, South Korea, Thailand, Vietnam
United States
Belgium, San Marino, Italy, Spain, Netherlands, France, Germany, Finland, Austria, Denmark, Ireland, Luxembourg, Monaco, Norway, Sweden, Switzerland, Portugal, Poland, Hungary, Canada, Estonia, Australia, Mexico, New Zealand, Bulgaria, Croatia, Cyprus, Czechia, Greece, Greenland, Iceland, Liechtenstein, Lithuania, Malta, Romania, Russia, Slovakia, Slovenia, Latvia, Turkey, United Kingdom
How long will it take to receive my order?
How long will it take to receive my order?
Estimated delivery time to USA: 3-6 workdays;
Estimated delivery time to Canada, Mexico: 4-7 workdays;
Estimated delivery time to Australia: 4-7 workdays;
Estimated delivery time to European countries: 4-7 workdays;
Estimated delivery time to Asian countries: 3-5 workdays.
Returns and Refunds
How do I return a product?
How do I return a product?
Our return policy lasts 60 days. If 60 days have gone by since the delivery, unfortunately, we can’t offer you a refund or exchange.
To be eligible for a return, your item must be unused, not installed, clean and in the same condition that you received it. Shrink wrapping must not be broken. It must also be in the original packaging.
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
Steps of Returning Products to Fab Heavy Parts
1. Request returns in seconds at our return portal.
2. Fill in the email address you left with the order & the order number to start the return. Note: a correct order number format starts with a # hashtag
3. Select the items you wish to return and choose the return reason and upload photos of the received package.
Then, Fab Heavy Parts receives your return request and starts to process your return request. We may contact you for more details.
Steps after the approval of your return request:
1. A Return label will be sent to you via email. Print out the return label, place it on the parcel, and take it to the drop-off point. Make sure you properly pack the product for return if it’s returnable.
2. A refund of the original purchase price will be issued.
Any questions about returning products, please feel free to contact us at info@fabheavy.com
How long will it take to receive my refund?
How long will it take to receive my refund?
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment within 3-10 business days.
Payment Methods
What kind of payment methods do you accept?
What kind of payment methods do you accept?
We accept all major credit cards, PayPal, Google Pay, Apply Pay, Shop Pay, debit cards.
If you prefer offline payment, please contact us to get our bank transfer details.
Taxes or duties
Will I receive customs/import duties?
Will I receive customs/import duties?
For orders shipping to the United States, our price includes the import fees. The receiver/buyer doesn't need to pay any extra customs taxes, or duties for their packages. For orders shipping to non-US countries, please check our policy here.
