FAST DELIVERY
Enginetech R39158-STD Engine Cast Iron Piston Ring Complete Set for Domestic and Import Engines
100% ORIGINAL AND QUALITY
EASY RETURN
- Description
- Fitment
- Warranty and Refund
- Reviews
The Enginetech R39158-STD Engine Cast Iron Piston Ring Complete Set is designed for professional engine rebuilders seeking reliable, high-quality components. This set includes all necessary rings to ensure optimal engine performance, featuring a durable cast iron construction that withstands high temperatures and pressures. Engineered with precision, these piston rings adhere to SAE guidelines for consistent end gaps, providing a perfect fit for a variety of engine applications. This set's comprehensive design makes it suitable for both domestic and import engines, offering versatility and value for engine rebuild projects.
The set features top and second compression rings with a thickness of 5/64 inch, ensuring effective sealing and compression. The oil ring, measuring 3/16 inch thick, is designed to control oil consumption and reduce blow-by, contributing to cleaner operation and improved engine longevity. The rings have an outside diameter of 3.910 inches, precisely manufactured to meet high standards for fit and durability. Whether you're restoring an older engine or building a new one, this complete piston ring set from Enginetech provides the reliability needed for a successful rebuild.
Enginetech has been family-owned and operated since 1982, dedicated to providing engine builders with top-quality parts backed by excellent customer service. Their parts are specifically engineered for engine rebuilder needs, ensuring a precise fit and long-lasting performance. The R39158-STD set is ideal for those who demand durability and consistency in their engine rebuilds, offering peace of mind during assembly and operation. With nationwide distribution and a reputation for quality, Enginetech's piston rings are a trusted choice for professional mechanics and DIY enthusiasts alike.
Features:
- Consistent end gaps following SAE guidelines
- Top Compression Ring Thickness: 5/64 in
- Second Compression Ring Thickness: 5/64 in
- Oil Ring Thickness: 3/16 in
- Ring Outside Diameter: 3.910 inches
- Durable cast iron construction for high-temperature resistance
- Suitable for both domestic and import engines
- Engineered specifically for engine rebuilders
- Backed by decades of quality and customer service
| Top Compression Ring Thickness: 5/64 in |
| Second Compression Ring Thickness: 5/64 in |
| Oil Ring Thickness: 3/16 in |
| Ring Outside Diameter: 3.910 |
| Aaiaid Part Number: BBPTR39158-STD |
| Part Number: R39158-STD |
| 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.









