Engine Overhaul 1.4 TSI / TFSI CTHB (EA111) Replacement Engine

Engine rebuild 1.4 TSI / TFSI CTHB (EA111) replacement engine — better than factory new

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

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 response to the most common failure patterns.

• Upgraded oil pump — The biggest weak point of this engine is its oil pump, which from the factory does not build enough oil pressure and repeatedly leads to failures. Without sufficient oil pressure, warning messages, rattling noises and loss of power quickly appear and almost always lead to engine damage. For this reason, we use a specially developed oil pump that increases oil pressure across the entire rev range and protects the engine from wear.
• Reinforced pistons — When tuned for more power or driven hard, this engine is increasingly prone to piston damage in the ring area. It is not uncommon to see oil consumption of 0.5L/1000km or more, while compression and power drop noticeably. The higher combustion-chamber temperature 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. In combination with high-quality bearing shells, this engine is then also ideally suited for the performance-oriented driver.
• Reinforced timing chain set — The increased wear of the timing chain is largely related to the chain's 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 (for full rebuild)
• Bearing tunnel (for full rebuild)
• Oil pump
• Timing chain set / timing drive (complete)
• Shaft seals
• Cylinder head gasket & bolts
• Resurface sealing faces
• Valves, guides, valve stem seals
• Hydraulic lifters & roller rocker arms
• Camshafts (for full rebuild)
• Cam phasers (for full rebuild)
• Oil jets
• Oil pan & timing 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, please ask before ordering.

Versions & 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 possible on request.