Engine Rebuild 1.4 TSI / TFSI CTHC (EA111) Replacement Engine

Engine Rebuild 1.4 TSI / TFSI CTHC (EA111) Replacement Engine — Better Than Factory

The 1.4 TSI/TFSI (EA111) with engine code CTHC is a widely used unit from the VAG group (VW, Audi, SEAT, Skoda) — with known weak points that regularly appear at high mileage or with sporty driving. MIK Motoren does not simply rebuild this engine back to factory standard, but specifically eliminates the design weaknesses of the original. The result: a replacement engine that is better than factory.

MIK Upgrades — why this engine lasts longer

The 1.4 TSI/TFSI (EA111) has specific engine-side weak points that we know from years of hands-on experience. Our upgrades are not a marketing gimmick — they are the direct answer to the most common failure patterns.

• Upgraded oil pump — The biggest weak point of this engine is its oil pump, which does not generate enough oil pressure from the factory and repeatedly leads to failures. Without sufficient oil pressure, warning messages, rattling noises, and loss of power quickly become noticeable and almost always lead to engine damage. For this reason, we rely on a specially developed oil pump that increases oil pressure across every rpm range and protects the engine from wear.
• Reinforced pistons — When tuned or driven hard, this engine is increasingly prone to piston damage in the ring zone. It is not uncommon for oil consumption to reach 0.5L/1000km or more, and compression as well as power drop significantly. The increased temperature in the combustion chamber then puts particular strain on the pistons and valves. Modified pistons, improved piston rings, and a specially honed cylinder surface provide the remedy.
• High-quality bearing shells — As part of the overhaul, all components are precisely measured and machined. The bearing clearance between the individual components is set for lifetime and performance, ensuring especially smooth engine operation. Combined with high-quality bearing shells, this engine is then also ideally suited for the performance-oriented driver.
• Reinforced timing chain kit — The increased wear of the timing chain is largely related to the chain design and the freedom of movement of the chain links on the guide rails. A modified chain design, along with a special guide rail geometry, ensures maximum lifetime of the timing chains in this engine.

Rebuild scope — nothing more is possible

• Main bearings, connecting rod bearings, thrust washers
• Pistons & piston rings
• Cylinder bores
• Connecting rods
• Crankshaft (during full rebuild)
• Bearing journals (during full rebuild)
• Oil pump
• Timing chain kit / timing drive (complete)
• Shaft seals
• Cylinder head gasket & bolts
• Resurface sealing faces
• Valves, guides, valve stem seals
• Hydraulic lifters & roller finger followers
• Camshafts (during full rebuild)
• Cam phasers (during full rebuild)
• Oil jets
• Oil pan & chain cover
• Ultrasonic cleaning of all components
• Grinding, honing & polishing
• LIVE documentation via app

Vehicle compatibility

This replacement engine is compatible with: VW Golf V/VI, Polo, Touran, Tiguan; Audi A1, A3; SEAT Leon, Ibiza; Skoda Octavia, Fabia. If you have any questions about vehicle compatibility, feel free to ask before placing your order.

Variants & prices

Partially rebuilt / No additional service: from €3819.00 | Partially rebuilt / Removal & installation: from €7408.00 | Partially rebuilt / Vehicle pickup + removal & installation: from €8565.00

All prices incl. VAT Shipping and installation options available. Replacement engine delivery available on request.