The Theta II G4KD is one of the most widely used engines Hyundai and Kia have ever built, and it's one of the engines we field the most used-unit requests for.
Engine Overview
The G4KD is a 2.0L (2.4L in the G4KE variant) inline-4 MPI gasoline engine from the Theta II family, fitted across the YF Sonata, K5, Sportage R, and Santa Fe lines. It uses a timing chain rather than a belt, so there's no fixed timing service interval, though tensioners and guides wear over high mileage.
Why It's in Demand
Its use across four high-volume model lines means a large, steady supply of donor vehicles comes off the road in Korea every year, which keeps used-unit pricing competitive compared to rarer engine codes.
What to Check Before Buying a Used Unit
- Compression test results across all four cylinders
- Oil consumption history from the seller, where available
- Timing chain rattle at cold start, which can indicate tensioner wear
- Engine mount condition, since this affects installation more than the engine itself
Every G4KD we export goes through this kind of documented testing before it ships — see our used engine grading process for details.
Middle East & Latin America Fit
Sportage and Santa Fe are both common fleet and personal vehicles across the GCC, and Sonata/K5 sedans see steady demand across Latin American taxi fleets — all four sharing the same engine code means faster sourcing regardless of which model your customer drives.
Looking for a G4KD engine? Contact HNS KOREA for current stock, test results, and pricing.
Related parts catalogs
Browse our catalogs by category and model: engine parts, transmission parts, chassis parts, body parts, trim parts, or find your vehicle in the Hyundai & Kia model list, KGM, Renault Korea and GM Korea catalogs.