Returns and Refunds Policy

Effective Date: July 26, 2026

At MSS Motorsports UG, we supply marine diesel engines, marine generators, propulsion systems, replacement parts, controls, and accessories from established marine brands.

Because many of these products are high-value, serial-numbered, application-specific, or specially ordered, all returns and refunds are subject to the conditions below.

1. Return Eligibility

Eligible stocked parts and accessories may be returned within 30 calendar days of delivery.

Eligible complete engines, marine generators, gearboxes, drives, and propulsion packages may be returned within 14 calendar days of delivery, subject to prior written approval.

To qualify for a return, the product must:

  • Be unused, uninstalled, and uncommissioned.
  • Remain in its original condition.
  • Be free from fuel, oil, coolant, grease, or other contamination.
  • Include all original components, accessories, manuals, labels, and documentation.
  • Remain in the original manufacturer packaging, crate, pallet, or shipping frame.
  • Have an approved Return Authorization number.
  • Be suitable for resale in the condition in which it was originally supplied.

Products that have been installed, operated, programmed, registered, modified, or placed into service are not eligible for an ordinary return.

2. Products Not Eligible for Return

Unless MSS Motorsports UG supplied the wrong product, the product arrived damaged, was materially misdescribed, or applicable law requires otherwise, the following products are not returnable:

  • Installed, operated, or commissioned products.
  • Products showing installation marks, tool marks, damaged threads, cut wiring, or fluid contamination.
  • Special-order, non-stock, or customer-sourced products.
  • Custom-configured engines, generators, gearboxes, or propulsion packages.
  • Products ordered with a specific voltage, frequency, phase, gear ratio, control system, duty rating, or regional specification.
  • Programmed, activated, or registered electronic products.
  • Opened electrical and electronic components that cannot be resold as new.
  • Products with removed, altered, or damaged serial-number labels.
  • Products with broken security or tamper-evident seals.
  • Products damaged through improper handling, transportation, installation, operation, storage, or maintenance.
  • Products missing their original packaging, accessories, or documentation.
  • Fluids, oils, paints, chemicals, gaskets, seals, and hazardous products once opened.
  • Clearance products expressly marked as “Final Sale.”
  • Products returned without prior authorization.
  • Products returned after the applicable return period.

Used, reconditioned, or remanufactured products may have separate return conditions. The applicable terms will be stated on the product page, quotation, invoice, or order confirmation.

3. Return Authorization Process

All returns require a Return Authorization, also referred to as an RA, before shipment.

To request an RA, contact:

Email: support@mssmotorsportsug.com
Phone: +1 (209) 418-7758

Please provide:

  • Customer or company name.
  • Order, invoice, or quotation number.
  • Product model and part number.
  • Product serial number, where applicable.
  • Date of delivery.
  • Reason for requesting the return.
  • Confirmation that the product has not been installed or operated.
  • Clear photographs of the product and packaging.
  • Photographs or videos showing any reported damage or issue.

When a return is approved, MSS Motorsports UG will provide:

  • A Return Authorization number.
  • Return shipping instructions.
  • The approved return location.
  • Packaging requirements.
  • Any applicable restocking fee.

Do not send a return to our corporate address unless it is specifically identified in the written return instructions.

Products returned without an RA may be refused or returned to the sender at the sender’s expense.

4. Return Shipping Costs

Customers are responsible for return shipping when the return results from:

  • Buyer’s remorse.
  • Project cancellation.
  • Duplicate ordering.
  • Ordering the wrong product.
  • Selecting an incompatible product based on incorrect or incomplete information supplied by the customer.
  • No longer requiring the product.

MSS Motorsports UG will cover reasonable authorized return shipping costs when:

  • We supplied the wrong product.
  • The product was materially different from the confirmed order.
  • The shipment arrived with verified carrier damage.
  • We made another confirmed fulfillment error.

All return shipments must:

  • Be shipped freight prepaid.
  • Use a trackable shipping service.
  • Be insured for the full product value.
  • Be securely packaged for parcel or commercial freight transportation.
  • Display the Return Authorization number where instructed.
  • Follow the return instructions provided by MSS Motorsports UG.

Complete engines, generators, gearboxes, and propulsion units must be returned in their original crate, pallet, or approved shipping frame.

MSS Motorsports UG is not responsible for loss or damage during customer-arranged return transportation.

5. Restocking Fees

Eligible stocked parts and accessories returned unused, complete, and in fully resalable condition are not normally subject to a restocking fee.

Approved customer-choice returns of complete engines, generators, gearboxes, drives, and propulsion packages may be subject to a restocking fee of up to 20% of the product purchase price.

The restocking fee may cover:

  • Product inspection.
  • Administrative processing.
  • Inventory handling.
  • Repackaging or recrating.
  • Quality verification.
  • Supplier or manufacturer charges.
  • Merchant-processing expenses that are not recoverable.
  • Reduction in resale value.

The applicable restocking fee will be communicated before the customer returns the product.

No restocking fee will apply when MSS Motorsports UG confirms that it supplied the wrong product.

6. Product Inspection

All returned products are inspected before a refund, exchange, or credit is approved.

The inspection may verify:

  • Product and serial numbers.
  • Product condition.
  • Packaging condition.
  • Completeness of the return.
  • Evidence of installation or operation.
  • Electrical connection or programming.
  • Missing accessories or documents.
  • Fluid contamination.
  • Damage sustained during return transportation.

Products that do not meet the approved return conditions may:

  • Be rejected and returned to the customer.
  • Be subject to reasonable handling or repackaging charges.
  • Receive a reduced refund based on their condition.
  • Be handled as a warranty claim where appropriate.

Receiving a returned product does not automatically mean that the return or refund has been approved.

7. Refund Processing

Once an authorized return has been received, inspected, and approved, MSS Motorsports UG will normally initiate the refund within 7 business days.

Refunds will be issued to the original payment method whenever possible.

Depending on the bank, payment processor, and country, additional time may be required before the refunded amount appears in the customer’s account.

Approved refunds may include:

  • The eligible product purchase price.
  • Applicable sales tax collected by MSS Motorsports UG.

Refunds generally do not include:

  • Original shipping charges.
  • Expedited shipping charges.
  • Customer-paid return shipping.
  • Applicable restocking fees.
  • Customs duties.
  • Import taxes.
  • Brokerage charges.
  • Port, airport, or terminal charges.
  • Storage or demurrage.
  • Bank-transfer fees.
  • Currency-conversion charges.
  • Installation, removal, diagnosis, crane, towing, or labor expenses.

Bank-transfer refunds will normally be returned to the originating or otherwise verified customer account.

8. Damaged, Missing, or Incorrect Shipments

Customers must inspect all shipments immediately upon delivery.

Visible damage, shortages, broken crates, punctured packaging, missing bands, or missing packages should be recorded clearly on the carrier’s delivery receipt before signing.

Damaged, missing, or incorrect shipments must be reported within 72 hours of delivery.

Contact:

Email: support@mssmotorsportsug.com
Phone: +1 (209) 418-7758

Please provide:

  • Customer or company name.
  • Order or invoice number.
  • Product model and serial number.
  • Clear photographs of the product.
  • Photographs of the crate, pallet, or packaging.
  • Photographs of shipping and product labels.
  • A copy of the carrier’s delivery receipt.
  • A description of the damage, shortage, or error.

Keep all crates, pallets, packaging, labels, and damaged components until the claim has been reviewed.

Do not install, operate, dismantle, repair, or return damaged or incorrect products without written instructions.

After reviewing the claim, MSS Motorsports UG may:

  • Supply missing components.
  • Send the correct product.
  • Arrange repair or replacement.
  • Coordinate a freight claim.
  • Approve a partial or full refund.
  • Provide another appropriate resolution.

Failure to report or document shipping damage promptly may affect our ability to assist with a carrier claim. This reporting requirement does not limit any right that cannot legally be excluded.

9. Product Compatibility and Customer Selection

Marine products are application-specific. Compatibility may depend on:

  • Existing engine model and serial number.
  • Vessel type and intended use.
  • Recreational or commercial duty.
  • Horsepower or power rating.
  • Generator voltage, phase, and frequency.
  • Gearbox type and reduction ratio.
  • Shaft, propeller, or drive system.
  • Electrical and control systems.
  • Cooling and exhaust arrangements.
  • Mounting dimensions.
  • Destination-country requirements.

Customers are responsible for providing complete and accurate technical information before ordering.

Recommendations made by MSS Motorsports UG are based on the information supplied by the customer.

We are not responsible for incorrect product selection caused by incomplete, inaccurate, or withheld information.

A product ordered incorrectly by the customer may qualify for return only when it remains unused, uninstalled, complete, and in fully resalable condition.

10. Special-Order and Sourced Products

Special-order and sourced products are generally final sale once procurement, allocation, importation, assembly, programming, or configuration has begun.

These products may include:

  • Engines or generators sourced specifically for a customer.
  • Non-stock replacement parts.
  • Manufacturer-built products.
  • Products with a selected gear ratio.
  • Region-specific products.
  • Commercial-duty configurations.
  • Custom control packages.
  • Programmed electronic components.
  • Products imported for a particular order.
  • Reconditioned or remanufactured products sourced to customer requirements.

The product page, quotation, invoice, or order confirmation may identify a product as special order, noncancelable, or nonreturnable.

Special-order status does not remove a customer’s rights regarding a product that was supplied incorrectly, arrived damaged, was materially misdescribed, or qualifies for a warranty remedy.

11. Order Cancellations

Cancellation requests must be submitted promptly to:

sales@mssmotorsportsug.com

An order is not canceled until MSS Motorsports UG confirms the cancellation in writing.

Orders canceled before payment processing, inventory allocation, supplier purchasing, configuration, or shipping preparation may qualify for a full refund.

After processing has begun, reasonable deductions may apply for:

  • Administrative processing.
  • Supplier cancellation fees.
  • Product allocation.
  • Bank or merchant-processing charges that are not recoverable.
  • Programming or configuration.
  • Inspection and preparation.
  • Crating.
  • Freight booking.
  • Export documentation.

Approved cancellations may be subject to a cancellation fee of up to 15%, depending on the order stage and costs already incurred.

Special-order, sourced, custom-configured, manufacturer-built, or non-stock products may not be canceled once procurement, production, allocation, or configuration has begun.

Orders that have already shipped will be handled as returns under this policy.

12. Warranty Claims Versus Returns

This Returns and Refunds Policy applies primarily to eligible unused and uninstalled products.

Products that have been installed, commissioned, operated, or placed into service will normally be handled under the applicable manufacturer, supplier, reconditioner, or product warranty.

A suspected defect may require:

  • Technical diagnosis.
  • Fault codes.
  • Photographs or videos.
  • Installation details.
  • Maintenance records.
  • Operating hours.
  • Inspection by a qualified technician.
  • Manufacturer or warranty-provider authorization.

Warranty remedies may include technical assistance, repair, replacement parts, product replacement, or another remedy available under the applicable warranty.

A warranty claim does not automatically entitle the customer to return the complete product or receive an immediate refund.

Please refer to our Warranty Policy for further information.

13. International Returns

International returns require prior written authorization.

Unless the return results from a confirmed MSS Motorsports UG error, international customers are responsible for:

  • Return freight.
  • Cargo insurance.
  • Export documentation.
  • Import documentation.
  • Customs clearance.
  • Duties and taxes.
  • Brokerage charges.
  • Port, airport, and terminal fees.
  • Storage and demurrage.
  • Government charges.

Duties, taxes, tariffs, customs charges, and other third-party fees are generally nonrefundable by MSS Motorsports UG.

International products must not be returned until the customer receives the approved return address, shipping instructions, and required customs information.

14. Legal Rights

This policy is intended to comply with applicable United States federal and state consumer-protection requirements.

Nothing in this policy excludes or limits a right or remedy that cannot legally be excluded.

Where applicable law provides a customer with greater rights than those stated in this policy, applicable law will control.

15. Contact Information

For returns, refunds, damaged shipments, missing products, or support:

MSS Motorsports UG
1521 I Street
Sacramento, CA 95814
United States

Phone: +1 (209) 418-7758
Support: support@mssmotorsportsug.com

For order cancellations and sales enquiries:

Sales: sales@mssmotorsportsug.com