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- Description
- Fitment
- Warranty and Refund
- Reviews
The Enginetech V4351 Engine Exhaust Valve is a high-quality component designed for optimal engine performance and durability. Constructed from OE-grade materials, including a chrome stem for enhanced wear resistance, this valve ensures reliable operation under demanding conditions. With a valve head diameter of 1.200 inches and a length of approximately 4.24 inches, it fits a range of late-model SUVs and trucks from brands like Isuzu, GMC, and Chevrolet. The valve features three lock grooves and a stem diameter of 6.00 mm, offering precise fitment and secure installation in compatible engines. Designed specifically for engine rebuilders and professional mechanics, the V4351 is engineered to meet or exceed OEM standards, ensuring longevity and efficient exhaust flow for your vehicle's engine.
Features:
- Material: Chrome Stem for enhanced durability and corrosion resistance
- Valve Head Diameter: 1.200 inches for precise exhaust flow
- Length: 4.236 inches suitable for various engine configurations
- Lock Groove Quantity: 3 for secure valve retention
- Stem Diameter: 6.00 mm ensuring proper fitment
- Designed to fit 2002-2005 GMC Envoy, GMC Envoy XL, Chevrolet Trailblazer EXT, and 2003-2005 Isuzu Ascender models
Fits Following Models:
2002 Chevrolet Trailblazer
2002 Chevrolet Trailblazer EXT
2002 GMC Envoy
2002 GMC Envoy XL
2002 Oldsmobile Bravada
2003 Chevrolet Trailblazer
2003 Chevrolet Trailblazer EXT
2003 GMC Envoy
2003 GMC Envoy XL
2003 Isuzu Ascender
2003 Oldsmobile Bravada
2004 Buick Rainier
2004 Chevrolet Colorado
2004 Chevrolet Trailblazer
2004 Chevrolet Trailblazer EXT
2004 GMC Canyon
2004 GMC Envoy
2004 GMC Envoy XL
2004 GMC Envoy XUV
2004 Isuzu Ascender
2004 Oldsmobile Bravada
2005 Buick Rainier
2005 Chevrolet Colorado
2005 Chevrolet Trailblazer
2005 Chevrolet Trailblazer EXT
2005 GMC Canyon
2005 GMC Envoy
2005 GMC Envoy XL
2005 GMC Envoy XUV
2005 Isuzu Ascender
2005 Saab 9-7x
2006 Chevrolet Colorado
2006 GMC Canyon
2006 Hummer H3
2006 Isuzu Ascender
2006 Isuzu i-280
2006 Isuzu i-350
| Material: Chrome Stem |
| Valve Head Diameter: 1.200 in |
| Length: 4.236 in |
| Lock Groove Quantity: 3 |
| Stem Diameter: 6.00 mm |
| Aaiaid Part Number: BBPTV4351 |
| Part Number: V4351 |
| 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.









