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Enginetech P4788(4).50 Engine Piston Set Without Rings for Subaru and Saab Vehicles
100% ORIGINAL AND QUALITY
EASY RETURN
- Description
- Fitment
- Warranty and Refund
- Reviews
Engine Piston Set - without Rings
The Enginetech P4788(4).50 engine piston set is designed for precise performance and compatibility with a range of Subaru models from 2004 and 2005, including the Baja, Forester, Impreza, Legacy, and Outback, as well as the Saab 9-2X from 2005. Engine rebuilders and automotive professionals can rely on this high-quality piston set, which offers matched weights for optimal balance and smooth operation. Crafted with durability and efficiency in mind, these pistons are engineered to meet stringent standards for performance and longevity.
Each piston features a top compression ring thickness of 1.20 mm, a second compression ring also measuring 1.20 mm, and an oil ring thickness of 2.50 mm, ensuring excellent sealing and oil control. The piston pin outside diameter is 0.9055 inches, with a bore diameter of 3.917 inches and a compression height of 1.161 inches, making it suitable for specific engine rebuilds. Designed without rings, this set provides flexibility for custom or specific ring installation to meet your engine’s unique requirements.
Engineered specifically for the needs of engine rebuilers, the Enginetech P4788(4).50 piston set is part of a comprehensive line of high-quality parts backed by nationwide distribution and dedicated customer service. Whether restoring a classic or performing a modern engine overhaul, this piston set offers the precision, durability, and performance that professionals demand, ensuring your engine runs smoothly and reliably for miles to come.
Features:
- Matched weights for perfect balance and smooth engine operation
- Top Compression Ring Thickness: 1.20 mm for optimal sealing
- Second Compression Ring Thickness: 1.20 mm for added compression
- Oil Ring Thickness: 2.50 mm for effective oil control
- Piston Pin Outside Diameter: 0.9055 inches for secure fit
- Bore Diameter: 3.917 inches compatible with specific Subaru and Saab engines
- Compression Height: 1.161 inches for precise engine fit
- Engine set designed without rings, allowing customization
- Compatible with a range of 2004-2005 Subaru and Saab models
- Engineered specifically for professional engine rebuilding
Fits Following Models:
1999 Subaru Impreza
2000 Subaru Impreza
2000 Subaru Legacy
2000 Subaru Outback
2001 Subaru Forester
2001 Subaru Impreza
2001 Subaru Legacy
2001 Subaru Outback
2002 Subaru Forester
2002 Subaru Impreza
2002 Subaru Legacy
2002 Subaru Outback
2003 Subaru Baja
2003 Subaru Forester
2003 Subaru Impreza
2003 Subaru Legacy
2003 Subaru Outback
2004 Subaru Baja
2004 Subaru Forester
2004 Subaru Impreza
2004 Subaru Legacy
2004 Subaru Outback
2005 Saab 9-2X
2005 Subaru Baja
2005 Subaru Forester
2005 Subaru Impreza
2005 Subaru Legacy
2005 Subaru Outback
2006 Saab 9-2X
2006 Subaru Baja
| Top Compression Ring Thickness: 1.20 mm |
| Second Compression Ring Thickness: 1.20 mm |
| Oil Ring Thickness: 2.50 mm |
| Piston Pin Outside Diameter: 0.9055 |
| Bore Diameter: 3.917 |
| Compression Height: 1.161 |
| Aaiaid Part Number: BBPTP4788(4).50 |
| Part Number: P4788(4).50 |
| 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.









