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Enginetech EM4391 Engine Exhaust Valve for Toyota and Scion Models
100% ORIGINAL AND QUALITY
EASY RETURN
- Description
- Fitment
- Warranty and Refund
- Reviews
The Enginetech EM4391 Engine Exhaust Valve is designed to deliver reliable performance and durability for a variety of Toyota and Scion vehicles. Crafted from OE-grade materials, this valve features a nitrided stem for enhanced wear resistance and longevity. The valve head diameter measures approximately 1.161 inches, ensuring proper fit and optimal exhaust flow. With a length of nearly 4 inches and a single lock groove, this component is engineered for straightforward installation and secure fitment in compatible engines. The stem diameter of 5.50 mm contributes to the valve's robust construction, providing consistent operation under demanding engine conditions. Whether you’re rebuilding or maintaining your vehicle’s exhaust system, the EM4391 valve offers quality and performance that meet or exceed OE standards. It is suitable for a range of models, including 2004 Toyota Camry, Highlander, RAV4, Solara, as well as 2012–2015 Toyota and Scion models. As part of Enginetech’s comprehensive engine parts lineup, this valve is a dependable choice for professional engine rebuilders and DIY enthusiasts alike. Trust Enginetech, a family-owned company since 1982, for engine components engineered specifically for durability and ease of installation. Our nationwide distribution network ensures quick delivery, and our dedicated customer service team is here to support your project every step of the way.
Features:
- Material: Nitrided Stem for enhanced wear resistance
- Valve Head Diameter: 1.161 inches for optimal exhaust flow
- Length: Approximate 4 inches for precise fit
- Lock Groove Quantity: 1 for secure installation
- Stem Diameter: 5.50 mm for durability
- Compatible with various Toyota and Scion models from 2004 to 2015
Fits Following Models:
2001 Toyota Highlander
2001 Toyota RAV4
2002 Toyota Camry
2002 Toyota Highlander
2002 Toyota RAV4
2002 Toyota Solara
2003 Toyota Camry
2003 Toyota Highlander
2003 Toyota RAV4
2003 Toyota Solara
2004 Toyota Camry
2004 Toyota Highlander
2004 Toyota RAV4
2004 Toyota Solara
2005 Scion tC
2005 Toyota Camry
2005 Toyota Highlander
2005 Toyota RAV4
2005 Toyota Solara
2006 Scion tC
2006 Toyota Camry
2006 Toyota Highlander
2006 Toyota RAV4
2006 Toyota Solara
2007 Scion tC
2007 Toyota Camry
2007 Toyota Highlander
2007 Toyota RAV4
2007 Toyota Solara
2008 Scion tC
2008 Scion xB
2008 Toyota Camry
2008 Toyota RAV4
2008 Toyota Solara
2009 Pontiac Vibe
2009 Scion tC
2009 Scion xB
2009 Toyota Camry
2009 Toyota Corolla
2009 Toyota Matrix
2010 Pontiac Vibe
2010 Scion tC
2010 Scion xB
2010 Toyota Camry
2010 Toyota Corolla
2010 Toyota Matrix
2011 Scion xB
2011 Toyota Camry
2011 Toyota Matrix
2012 Scion xB
2012 Toyota Matrix
2013 Scion xB
2013 Toyota Matrix
2014 Scion xB
2015 Scion xB
| Material: Nitrided Stem |
| Valve Head Diameter: 1.161 in |
| Length: 3.982 in |
| Lock Groove Quantity: 1 |
| Stem Diameter: 5.50 mm |
| Aaiaid Part Number: BBPTEM4391 |
| Part Number: EM4391 |
| 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.









