Bring the front-right corner back to its designed damping with the KYB Excel-G Suspension Strut 339037, a nitrogen gas-charged, twin-tube gas strut that installs as a direct-fit replacement for the 2007-2013 Acura MDX and 2010-2013 Acura ZDX (front right position). Built on KYB's OE assembly lines using OE-quality components, the Excel-G is calibrated to restore original, designed performance rather than change it — the classification KYB calls OEA (Original Equipment for the Aftermarket).
- Triple-lip fluid seal: reduces the chance of oil and gas leaking out.
- Vehicle-specific damping valves: hand assembled in-house to manage tire contact, steering response and body movement.
- Strong strut body and bracket: among the thickest in the industry to minimize flex and help maintain correct alignment.
- Made in USA.
KYB designs the Excel-G to help restore the original control and handling of your Acura, and it helps keep electronic safety systems performing as the manufacturer intended. To reduce the chance of noise and vibration, KYB recommends installing new strut mounts (part number SM5212), and you can protect the strut from dirt, debris and salt with a KYB Strut Boot (part number SB102).
Interchange: 51605STXA03 · 51605STXA05 · 72433
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicles does the KYB 339037 strut fit?
It's a direct-fit replacement for the 2007-2013 Acura MDX and 2010-2013 Acura ZDX in the front right position. See the Buyer's Guide tab for engine-level details.
What type of strut is this?
It's a KYB Excel-G nitrogen gas-charged, twin-tube gas strut, built on KYB's OE assembly lines using OE-quality components and calibrated to restore the vehicle's original designed performance.
Does it include strut mounts or a boot?
No. KYB recommends installing new strut mounts (part number SM5212) and protecting the strut with a KYB Strut Boot (part number SB102); these are sold separately.
What does the triple-lip fluid seal do?
The triple-lip fluid seal is designed to reduce the chance of oil and gas leaking out of the strut, helping maintain consistent damping.
Should I replace both struts at the same time?
This listing is for one strut. Replacing struts as a pair on the same axle is a best practice for balanced, even ride control; confirm what your vehicle needs.
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