-61%
Sold out
  • Trusted by Racers

    Professional-grade parts used trackside.

  • Real Support, Real People

    Expert help during business hours.

  • Secure Shopping

    Encrypted checkout & trusted payments.

  • Fast U.S. Shipping

    Orders ship quickly from regional warehouses.

Mahle OE Performance Napier Ring Set for THM-13 4.125 x .043 x .135 inch, Bulk Pack of 48

Mahle OE
mhl3021256B
Out of stock
Engine
$863.09 $332.99
Enhance your engine's performance with the Mahle OE Performance Napier Ring Set designed specifically for the...

Mahle OE Performance Napier Ring Set for THM-13 4.125 x .043 x .135 inch, Bulk Pack of 48

Enhance your engine's performance with the Mahle OE Performance Napier Ring Set designed specifically for the THM-13 engine. This set includes 48 plain rings crafted to meet high standards of durability and precision, ensuring optimal sealing and compression in your engine assembly. The rings feature a width of approximately 0.135 inches and a thickness of 0.043 inches, making them suitable for a variety of automotive rebuild and repair projects. Constructed by Mahle OE, a trusted name in engine components, these rings are engineered to deliver reliable performance under demanding conditions. Their design promotes efficient oil control and combustion sealing, contributing to improved engine longevity and efficiency. These rings are ideal for professional engine builders and enthusiasts seeking quality aftermarket parts. The set is packaged in bulk for convenience, allowing for multiple rebuilds or extensive repairs. As a non-CARB approved product, it is suitable for applications where emissions compliance is not mandated. Please note that this product is air freight prohibited and does not require LTL freight. With a focus on quality and performance, the Mahle Rings Performance Napier Ring Set is a dependable choice for engine restoration and upgrade tasks.

Features:

  • Designed for the THM-13 engine with 4.125-inch bore size
  • Includes 48 plain rings in a bulk pack for multiple applications
  • Ring width: approximately 0.135 inches for effective sealing
  • Ring thickness: 0.043 inches optimized for durability and performance
  • Manufactured by Mahle OE, a reputable name in engine components
  • Promotes efficient oil control and combustion sealing
  • Suitable for professional engine rebuilds and repairs
  • Non-CARB approved; ideal for applications without emissions requirements
  • Air freight prohibited for safe shipping
Read More
Read Less

Shipping

Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.

Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.

Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.

Returns

Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.

Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.

Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.

Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).

Your cart

×