Turbocharger for Kia Optima Sportage (2011-2015) 2.0L

Direct-Replacement Turbocharger for 2011-2015 Kia Optima, Sportage (TF / SL)

What it Does: The direct-replacement turbocharger replaces the failing OEM assembly on 2011-2015 Kia Optima and Sportage models to eliminate shaft play, restore factory boost levels, and recover lost engine power.

The Stock Kia Optima, Sportage Turbocharger Failure Points

The OEM turbocharger on the Theta II 2.0T (G4KH) engine experiences severe thermal cycling, leading to premature journal bearing degradation, excessive radial shaft play, and oil seal failure. High exhaust gas temperatures (EGTs) accelerate oil coking within the center housing rotating assembly (CHRA), starving internal surfaces of adequate lubrication. Additionally, internal wastegate pivot bushings wear loose over time, preventing complete wastegate closure and causing chronic underboost fault codes (P0299), sluggish spool, and exhaust smoke under load.

The Engineering Solution

Engineered to exact OEM dimensional specifications, this replacement unit features a high-speed balanced CHRA to suppress rotating assembly harmonics and ensure reliable boost delivery. The turbine housing is cast from high-nickel ductile iron to resist thermal distortion, cracking, and wastegate seat erosion. Machined with factory-spec coolant channels, oil inlet ports, and mounting flanges, this turbo integrates directly with existing oil feed, drain, and intercooler piping, restoring the factory mechanical integrity defined by OEM references 28231-2G410 and 28231-2G420.

What's Included

• 1 × Turbocharger w/ Gasket

Technical Specifications

Compatibility

• 2011-2015 Kia Optima (SX, SXL Trims, 2.0L Turbo Engine)
• 2011-2015 Kia Sportage (SX Trim, 2.0L Turbo Engine)

Frequently Asked Questions & Fitment Warnings

Does this fit the TF / SL Optima, Sportage?

Yes, this is a direct fit for the 2011-2015 Kia Optima and Sportage equipped with the 2.0L Theta II (G4KH) engine; it does not fit naturally aspirated 2.4L or hybrid powertrains.

What maintenance must be completed prior to turbocharger installation?

Clean or replace the oil feed and return lines, and complete a fresh engine oil and filter change to prevent residual carbon contaminants from starving the new bearings.

The Kia Engineering Caliber

Built to factory forced-induction tolerances, this turbocharger withstands the continuous heat and backpressure of the high-compression Theta II platform to deliver dependable manifold pressure and daily driving reliability.