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Enginetech R41258-060 Engine Cast Iron Piston Ring Complete Set for 4.125-inch Bore
100% ORIGINAL AND QUALITY
EASY RETURN
- Description
- Fitment
- Warranty and Refund
- Reviews
Engine Cast Iron Piston Ring Complete Set
The Enginetech R41258-060 engine cast iron piston ring complete set is designed to deliver reliable performance and durability for your engine rebuild or repair. This comprehensive set includes top compression rings, second compression rings, and oil rings, all engineered with precision to meet or exceed OEM specifications. Constructed from high-quality cast iron, these piston rings provide excellent wear resistance and thermal stability, ensuring long-lasting engine operation. Each ring is manufactured with consistent end gaps following SAE guidelines, which helps maintain optimal compression and oil control throughout your engine's lifespan. The set is compatible with engines requiring a 4.125-inch bore diameter, making it suitable for a variety of import and domestic applications. Whether you're restoring an older engine or building a new performance setup, these piston rings offer the quality and reliability that professionals trust from Enginetech. Designed for ease of installation and optimal sealing, this complete set ensures your engine maintains proper compression, reduces blow-by, and minimizes oil consumption, contributing to improved overall engine efficiency. Enginetech's commitment to quality and customer satisfaction makes this piston ring set an excellent choice for engine builders and technicians seeking dependable components for their projects. With nationwide distribution and dedicated customer support, Enginetech provides the tools you need to achieve successful engine rebuilds and maintenance tasks.
Features:
- Top Compression Ring Thickness: 5/64 inch for effective seal and compression
- Second Compression Ring Thickness: 5/64 inch for consistent performance
- Oil Ring Thickness: 3/16 inch to control oil consumption and reduce emissions
- Ring Outside Diameter: 4.125 inches to match specific engine bore requirements
- Constructed from durable cast iron to withstand high temperatures and wear
- Engineered for precision fit and reliable sealing in engine rebuilds
- Designed to meet or exceed OEM quality standards for long-lasting performance
- Compatible with a wide range of import and domestic engines requiring a 4.125-inch bore
| Top Compression Ring Thickness: 5/64 in |
| Second Compression Ring Thickness: 5/64 in |
| Oil Ring Thickness: 3/16 in |
| Ring Outside Diameter: 4.125 |
| Aaiaid Part Number: BBPTR41258-060 |
| Part Number: R41258-060 |
| Brand Aaia: BBPT |
Returns
30-Day Money-Back Guarantee
We want you to be completely satisfied with your purchase! If you are not happy for any reason, you may return the item within 30 days for a refund, minus shipping fees, provided that: The part is brand new, uninstalled, and undamaged in any way.
To initiate a return, please contact us or email support@mizumoauto.com for a Return Authorization Number (RMA) and the return shipping address. Returns without an RMA number will be refused and returned to you at your expense.
Return Requirements:
- Items must be securely packed in the original manufacturer's packaging.
- All original materials must be included, such as hardware, manuals, protective caps, wrapping, and instructions.
- You must obtain and retain the tracking number for your return.
Non-Returnable Items:
- Piston rings, main bearings, and rod bearings are non-returnable if the manufacturer’s seal or shrink-wrapped plastic has been opened. No exceptions—this ensures the integrity of the parts you receive.
We are not responsible for lost or damaged returns. If your return is lost or damaged during shipping, a refund cannot be issued, as the item cannot be resold or returned to the supplier. Please file a claim directly with your shipping carrier for reimbursement.
Refunds are processed within 1-2 business days after we receive and inspect the returned item. Please allow this processing time before inquiring about your refund status.
Warranty
Mizumo Auto provides a 90-day Limited Warranty against defects in workmanship and materials under normal service conditions, effective from the original delivery date.
This warranty is non-transferable and applies only to the original purchaser. Coverage is limited to the replacement or refund of defective products.
Exclusions:
The warranty does not cover labor costs, damage resulting from accidents, misuse, alterations, or unauthorized modifications, as well as additional expenses such as towing, fluids, oils, car rentals, and any other parts not included in the original purchase.
Warranty Claims Process:
- All warranty claims must be pre-authorized and returned prepaid to Mizumo Auto for inspection and approval.
- No exchanges will be made for products that have been damaged, misused, or improperly installed. We strongly recommend professional installation.
- The buyer assumes all risk of damage resulting from improper installation.
All disputes related to transactions shall be resolved by a court of competent jurisdiction in Los Angeles County, California.
Shipping
We offer Free UPS Ground or USPS Ground Advantage shipping within the continental U.S. (48 states).
Shipping to Other Locations:
A delivery surcharge applies to shipments to: Alaska, Hawaii, Puerto Rico, U.S. territories, APO/FPO addresses, Canada, and international destinations.
Order Processing & Tracking:
- Orders are shipped Monday through Friday, excluding holidays.
- Orders placed before 3:00 PM PST will ship the same day, unless unexpected delays occur.
- A tracking number will be emailed within one business day after shipping.
If you do not receive a tracking number, please:
- Check your spam/junk folder.
- If it's not there, contact us via phone or eBay message for assistance.
International Orders:
Import duties, taxes, and brokerage fees are not included in the shipping fee. Please check with your shipping carrier and local customs office regarding any applicable fees before placing your order.









