Rod knock, excessive oil consumption, or a seized Theta II or Lambda V6? As dedicated Kia engine specialists we supply and install blueprinted long blocks that correct the factory design issues — so the problem doesn’t come back.
If your Optima, Sorento, Forte, Sportage, or Soul is showing a persistent rod-knock ticking noise, burning more oil than it should, or has thrown a low-oil-pressure related code, you're likely dealing with the well-documented Theta II or Lambda V6 failures. In many cases the block is damaged beyond a simple repair. As Kia engine specialists we replace the factory-flawed components most commonly linked to repeat failures, so your new long block is a corrected version of the original — not just a like-for-like swap.
We stock long blocks for these Kia models: Optima, Sorento, Forte, Sportage, and Soul, covering engine families 2.4L Theta II (G4KE/G4KJ), 3.3L Lambda V6 (G6DH), and 2.0L Nu (G4NA/G4NB).
Not sure which engine your vehicle needs? Use our Instant Fitment Finder or submit your VIN and our team will confirm the exact match before you order.
Check My FitmentTell us your symptoms and VIN — we'll confirm whether replacement is the right call and get you a price today.
