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Enginetech R40858-030 Engine Cast Iron Piston Ring Complete Set for Classic American Motors and Jeep Models
Enginetech R40858-030 Engine Cast Iron Piston Ring Complete Set for Classic American Motors and Jeep Models
Enginetech R40858-030 Engine Cast Iron Piston Ring Complete Set for Classic American Motors and Jeep Models
Enginetech R40858-030 Engine Cast Iron Piston Ring Complete Set for Classic American Motors and Jeep Models
Enginetech

Enginetech R40858-030 Engine Cast Iron Piston Ring Complete Set for Classic American Motors and Jeep Models

$65.99 In Stock Sold out
SKU: R40858-030
Categories: Piston Ring Set

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100% ORIGINAL AND QUALITY

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  • Description
  • Fitment
  • Warranty and Refund
  • Reviews

Engine Cast Iron Piston Ring Complete Set

The Enginetech R40858-030 engine cast iron piston ring set is designed for optimal performance and durability in vintage American Motors and Jeep engines. Crafted with precision, this complete set includes top compression, second compression, and oil rings, all engineered to meet SAE guidelines for consistent end gaps and reliable sealing. The top and second compression rings feature a thickness of 5/64 inches, while the oil ring is 3/16 inches thick, ensuring effective oil control and compression across your engine's lifespan. With an outside diameter of approximately 4.08 inches, these rings are precisely manufactured for a perfect fit in compatible engines, promoting efficient combustion and reduced blow-by. Enginetech has been a family-owned industry leader since 1982, specializing in high-quality engine components tailored specifically for engine rebuilders and restorers. This set is ideal for restoring classic American Motors vehicles such as the Javelin, Rebel, Ambassador, and Jeep J-100 and J-2600 models from the 1970s, providing a reliable solution for engine rebuild projects. Our products undergo strict quality control to ensure they meet industry standards, backed by Enginetech’s commitment to customer satisfaction and nationwide distribution. Whether you're restoring a vintage vehicle or maintaining an existing engine, this piston ring set offers the durability and precision you need for a successful rebuild. Engine rebuilders and enthusiasts can trust Enginetech’s expertise and dedication to quality, making this piston ring set an essential component for your restoration toolkit.

Features:

  • Top Compression Ring Thickness: 5/64 in
  • Second Compression Ring Thickness: 5/64 in
  • Oil Ring Thickness: 3/16 in
  • Ring Outside Diameter: 4.080 in
  • Engine rebuild compatible with various 1970s American Motors and Jeep models
  • Engineered for consistent end gaps following SAE guidelines
  • Constructed from durable cast iron for long-lasting performance
  • Designed specifically for engine rebuilders and restorers
  • Part of Enginetech's high-quality engine parts lineup

Fits Following Models:
1970 American Motors Ambassador
1970 American Motors AMX
1970 American Motors Javelin
1970 American Motors Rebel
1970 Jeep J-2500
1970 Jeep J-3800
1971 American Motors Ambassador
1971 American Motors Javelin
1971 American Motors Matador
1971 Jeep J-100
1971 Jeep J-2500
1971 Jeep J-2600
1971 Jeep J-3800
1971 Jeep J-4500
1971 Jeep J-4600
1971 Jeep J-4700
1971 Jeep J-4800
1972 American Motors Ambassador
1972 American Motors Javelin
1972 American Motors Matador
1972 Jeep J-100
1972 Jeep J-2500
1972 Jeep J-2600
1972 Jeep J-4500
1972 Jeep J-4600
1972 Jeep J-4700
1972 Jeep J-4800
1972 Jeep Wagoneer
1973 American Motors Ambassador
1973 American Motors Javelin
1973 American Motors Matador
1973 Jeep J-100
1973 Jeep J-2500
1973 Jeep J-2600
1973 Jeep J-4500
1973 Jeep J-4600
1973 Jeep J-4700
1973 Jeep J-4800
1973 Jeep Wagoneer
1974 American Motors Ambassador
1974 American Motors Javelin
1974 American Motors Matador
1974 Jeep Cherokee
1974 Jeep J10
1974 Jeep J20
1974 Jeep Wagoneer
1975 American Motors Matador
1975 Jeep Cherokee
1975 Jeep J10
1975 Jeep J20
1975 Jeep Wagoneer
1976 American Motors Matador
1976 Jeep Cherokee
1976 Jeep J10
1976 Jeep J20
1976 Jeep Wagoneer
1977 American Motors Matador
1977 Jeep Cherokee
1977 Jeep J10
1977 Jeep J20
1977 Jeep Wagoneer
1978 American Motors Matador
1978 Jeep Cherokee
1978 Jeep J10
1978 Jeep J20
1978 Jeep Wagoneer
1979 Jeep Cherokee
1979 Jeep J10
1979 Jeep J20
1979 Jeep Wagoneer
1980 Jeep Cherokee
1980 Jeep J10
1980 Jeep J20
1980 Jeep Wagoneer
1981 Jeep Cherokee
1981 Jeep J10
1981 Jeep J20
1981 Jeep Wagoneer
1982 Jeep Cherokee
1982 Jeep J10
1982 Jeep J20
1982 Jeep Wagoneer
1983 Jeep Cherokee
1983 Jeep J10
1983 Jeep J20
1983 Jeep Wagoneer
1984 Jeep Grand Wagoneer
1984 Jeep J10
1984 Jeep J20
1985 Jeep Grand Wagoneer
1985 Jeep J10
1985 Jeep J20
1986 Jeep Grand Wagoneer
1986 Jeep J10
1986 Jeep J20
1987 Jeep Grand Wagoneer
1987 Jeep J10
1987 Jeep J20
1988 Jeep Grand Wagoneer
1988 Jeep J10
1988 Jeep J20
1989 Jeep Grand Wagoneer
1990 Jeep Grand Wagoneer
1991 Jeep Grand Wagoneer

Features:
Top Compression Ring Thickness: 5/64 in
Second Compression Ring Thickness: 5/64 in
Oil Ring Thickness: 3/16 in
Ring Outside Diameter: 4.080
Aaiaid Part Number: BBPTR40858-030
Part Number: R40858-030
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.

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