TrakMotive
AAR CV Axle Shaft

TrakMotive KA-8126 CV Axle Shaft - Front Left

Brand TrakMotive KA-8126
Position Front Left
Abs Ring Tooth Count 48
Abs Ring Type Toothed
Abs Tone Ring Included Yes
Axle Nut Head Type Hex
Axle Nut Height (in) 0.94
Axle Nut Height (mm) 24
Axle Nut Hex Size (in) 1.26
Axle Nut Hex Size (mm) 32
Axle Nut Included Yes
Axle Nut Length (in) 1.45
Axle Nut Length (mm) 36.95
Axle Nut Locking Type Stake
Axle Nut Thread Size M22*1.5
Boot Material Neoprene
Inboard Joint Type Male
Inboard Shaft Connection Style Spline
New Or Remanufactured New
Number Of Inboard Splines 28
Number Of Outboard Splines 30
Outboard Joint Type Conventional
Outboard Shaft Connection Style Spline
Overall Compressed Length (in) 25.75
Overall Compressed Length (mm) 654
Product line AAR CV Axle Shaft
Fits Kia · 5 vehicles

New. Built as a new CV axle shaft for a straightforward replacement.

Neoprene boot. Helps resist wear while keeping the joint protected and flexible.

ABS tone ring included. Comes with a toothed ring and axle nut for a complete setup.

Cross-references TrakMotive KA-8126, 49500D4300 and NCV75110 for the same application. See all 3.

$144.09Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $144.09
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

TrakMotive KA-8126 CV Axle Shaft for Kia Optima

TrakMotive KA-8126 is a new front left CV axle shaft for select Kia Optima applications. It is built for 2016-2020 Kia Optima models with fitment-specific notes, including updated-design 2016-2018 vehicles and 2019-2020 vehicles with the listed VIN requirements.

Key Features

  • Brand: TrakMotive AAR CV Axle Shaft
  • Part number: KA-8126
  • Front left CV axle shaft for Kia Optima
  • New construction with neoprene boot material
  • Inboard joint type: male
  • Inboard shaft connection: spline, 28 inboard splines
  • Outboard joint type: conventional
  • Outboard shaft connection: spline, 30 outboard splines
  • Overall compressed length: 25.75 in. (654 mm)
  • Includes axle nut with M22 x 1.5 thread, 32 mm hex size, and stake locking type
  • ABS tone ring included; 48-tooth toothed ABS ring

Product Details

KA-8126 is part of TrakMotive’s AAR CV Axle Shaft line, a product line focused on direct-fit driveline replacement for specific vehicle applications. This axle is engineered for front left installation on the Kia Optima and includes the ABS tone ring configuration called out for the application. TrakMotive KA-8126 also carries ISO 9001:1007 and TS 16949:2009 certified company manufacturing references, along with a limited lifetime warranty from the manufacturer.

This part cross-references Hyundai/Kia OE numbers 49500D4300 and NCV75110 for the same application.

Common Problems This Axle Can Address

  • Clicking or popping during turns from a worn CV joint
  • Vibration during acceleration caused by axle wear or imbalance
  • Grease leakage from a damaged axle boot
  • Noise from a failing front left driveline assembly
  • ABS-related fitment concerns when the correct tone ring configuration is required

Installation Notes

Verify the vehicle’s VIN and ABS configuration before installation, especially on 2016-2018 Kia Optima models with the updated design note and 2019-2020 vehicles with the listed VIN requirements. Confirm spline count, axle nut thread size, and compressed length against the original axle before assembly. Use the correct torque procedure for the axle nut and inspect related seals, hubs, and suspension components during replacement.

Quality Assurance

TrakMotive identifies this axle as a new part and backs it with a limited lifetime warranty. The brand also states ISO 9001:1007 and TS 16949:2009 certification references for its manufacturing process.

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2020KiaOptima2.0LL4Front LeftVIN 5, 1st Digit; AAR CV Axle Shaft
2019KiaOptima2.0LL4Front LeftVIN 5, 1st Digit; AAR CV Axle Shaft
2018KiaOptima2.0LL4Front LeftUpdated Design; VIN 2 (8th Digit); AAR CV Axle Shaft
2017KiaOptima2.0LL4Front LeftUpdated Design; VIN 2 (8th Digit); AAR CV Axle Shaft
2016KiaOptima2.0LL4Front LeftUpdated Design; VIN 2 (8th Digit); AAR CV Axle Shaft
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
TrakMotive — KA-812649500D4300NCV75110