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KYB 3430037 Suspension Shock Absorber - Rear
| Brand | KYB 3430037 |
|---|---|
| Position | Rear |
| Compressed Length | 16.22 |
| Extended Length | 26.25 |
| Stroke Length | 10.03 |
| Lower Mount Type | E2(12x40) |
| Upper Mount Type | S1(8mm) |
| Dust Cover Included | N |
| Internal Rebound Spring | N |
| B-stop | N |
| R-stop | Y |
| Product line | Excel-G |
| Fits | Mazda · 6 vehicles |
OE replacement choice. Restores original ride control, stability, and handling.
Twin-tube design. Nitrogen gas-charged for consistent damping performance.
Triple-lip fluid seal. Helps reduce the chance of oil and gas leaks.
Cross-references Mazda DB4J28700E, Mazda DH1G28910B and Mazda DH1G28910C for the same application. See all 3.
KYB Excel-G Rear Shock for Mazda CX-3
The KYB Excel-G shock absorber, part number 3430037, is an OE-style replacement for the rear suspension on 2016-2021 Mazda CX-3 models. It is built to restore original ride control, stability, braking response, lane-change behavior, and handling without changing the vehicle’s designed suspension character.
Made on KYB OE assembly lines, the Excel-G line uses OE-quality components and a nitrogen gas-charged twin-tube design. For Mazda CX-3 rear suspension service, 3430037 is a direct-fit option for technicians and owners looking to return the vehicle to factory-calibrated damping performance.
Key Features
- Fits 2016-2021 Mazda CX-3, rear
- OE-style replacement for Asian SUVs and crossovers
- Nitrogen gas-charged, twin-tube shock absorber design
- Vehicle-specific damping valves help manage tire contact, steering response, and body motion
- Triple-lip fluid seal helps reduce oil and gas leakage
- Strong strut body and bracket construction helps minimize flex and maintain alignment
- R-stop design included
Product Line Details
KYB Excel-G is the brand’s original-equipment-aftermarket line, focused on restoring factory ride and handling characteristics rather than altering them. For the Mazda CX-3, this means the shock absorber is calibrated to match the vehicle’s original suspension behavior and support consistent control in everyday driving.
What This Shock Absorber Helps Address
- Excessive rear bounce after bumps
- Reduced stability during braking or lane changes
- Loose or unsettled rear suspension feel
- Uneven tire contact caused by worn damping
- Loss of original Mazda CX-3 ride control
Installation Notes and Fitment
Fits 2016-2021 Mazda CX-3, rear. Additional components may be required depending on the vehicle’s suspension condition and service needs. Verify mount style and dimensions before installation: compressed length 16.22 in, extended length 26.25 in, stroke length 10.03 in, lower mount type E2 (12x40), upper mount type S1 (8 mm).
This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.
Quality Assurance
KYB supplies shocks and struts to new vehicle manufacturers, and the Excel-G line is assembled on the same OE production lines using OE-quality components. Part number 3430037 is engineered to restore original suspension performance for the Mazda CX-3 rear position.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2021 | Mazda | CX-3 | Rear | Recommended OEM replacement, additional components may be required.; Excel-G |
| 2020 | Mazda | CX-3 | Rear | Recommended OEM replacement, additional components may be required.; Excel-G |
| 2019 | Mazda | CX-3 | Rear | Recommended OEM replacement, additional components may be required.; Excel-G |
| 2018 | Mazda | CX-3 | Rear | Recommended OEM replacement, additional components may be required.; Excel-G |
| 2017 | Mazda | CX-3 | Rear | Recommended OEM replacement, additional components may be required.; Excel-G |
| 2016 | Mazda | CX-3 | Rear | Recommended OEM replacement, additional components may be required.; Excel-G |
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