KYB 345617 Suspension Shock Absorber - Rear

Brand KYB 345617
Position Rear
Compressed Length 11.93
Extended Length 17.45
Stroke Length 5.52
Lower Mount Type E2(19x45)
Upper Mount Type E2(19x45)
Dust Cover Included Y
Internal Rebound Spring N
B-stop N
R-stop Y
Fits —

OEA replacement. Restores original ride control and handling.

Twin-tube design. Nitrogen gas-charged for consistent damping performance.

Triple-lip fluid seal. Helps reduce oil and gas leakage.

Cross-references Chevrolet 3919913, Chevrolet 4940627 and Chevrolet 5348631 for the same application. See all 8.

$54.72Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Suspension Shock Absorbers are typically replaced in pairs, axle by axle.
Order total $54.72
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

KYB Excel-G Shock Absorber for OE Ride Control

The KYB Excel-G 345617 is a nitrogen gas-charged, twin-tube suspension shock absorber built to restore original ride control, stability, stopping response, lane-change handling, and overall vehicle balance. It is made on KYB OE assembly lines with OE-quality components and is calibrated to return the vehicle to its designed performance.

For heavy-duty truck and commercial vehicle service, this Excel-G shock is a direct-fit replacement choice for applications that need consistent damping and predictable control. It is also a strong match for Chevrolet and Freightliner service work where OE-style suspension behavior matters.

Key Features

  • KYB recommended OE replacement shock for heavy-duty trucks and commercial vehicles
  • Restores designed control and handling without changing the vehicle’s original ride character
  • Triple-lip fluid seal helps reduce oil and gas leakage
  • Vehicle-specific, hand-assembled damping valves manage tire contact, steering response, and body movement
  • Made in USA
  • Strong strut body and bracket design helps minimize flex and maintain alignment
  • Dust cover included
  • R-stop included

Product Details

KYB Excel-G is part of KYB’s OEA (Original Equipment for the Aftermarket) line, meaning it is engineered to match the original suspension behavior rather than alter it. Part number 345617 uses a twin-tube, gas-charged design with a compressed length of 11.93 inches, extended length of 17.45 inches, and stroke length of 5.52 inches. Upper and lower mount type are E2 (19x45).

This part cross-references Monroe Shocks & Struts 66893 for the same application. It also aligns with Chevrolet and Freightliner service needs where OE-style damping and chassis control are required. If you are searching for a KYB 345617 shock absorber for Chevrolet or Freightliner suspension repair, this Excel-G unit is built for that type of replacement work.

What It Helps Address

  • Excessive bouncing after bumps or dips
  • Loose steering feel and delayed lane-change response
  • Body movement during braking, cornering, or load transfer
  • Uneven tire contact caused by worn damping control
  • Suspension performance issues that can affect electronic safety systems

Installation Notes

Verify mount style, compressed length, extended length, and stroke before installation. This KYB shock absorber is a direct suspension replacement part, so matching the original application is important for proper fit and function. Inspect related suspension components, alignment condition, and tire wear before returning the vehicle to service.

Compatible with select Chevrolet and Freightliner applications that use part number 345617. For fitment-based searches, this is a KYB Excel-G shock absorber for Chevrolet and Freightliner suspension repair where OE ride control is required.

Quality Assurance

KYB supplies shocks and struts to new vehicle manufacturers, and the Excel-G line is produced on the same KYB OE assembly lines using OE-quality components. The design focuses on restoring original suspension performance and maintaining the vehicle’s intended control characteristics.

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Chevrolet — 3919913Chevrolet — 4940627Chevrolet — 5348631Chevrolet — 5559363Freightliner — 1614759000Freightliner — UCD62161Gabriel — 83203Monroe Shocks & Struts — 66893