Remanufactured VT1 CVT Transmission Assembly VT1 27 For Mini Cooper R50 R52 Rover 25 45 MG ZR ZS BYD F3 G3 L3 14L 16L 18L FWD Complete Gearbox

1. Product Overview This remanufactured VT1 CVT transmission assembly is a classic Punch Powertrain CVT unit, widely fitted on early Mini, Rover, MG and BYD compact front-wheel drive vehicles. Every unit undergoes complete teardown, deep cleaning, worn component inspection and renewal. We replace the critical steel push belt, all friction plates, seals, bearings and solenoids with upgraded OE-spec parts. It is bench-tested to resolve common VT1 failure issues including slipping, shudder, delayed gear engagement, no drive and fault codes related to pressure ratio error. This unit targets overseas transmission rebuild shops, auto repair chains and wholesale distributors, ready for direct installation after testing.

2. Fitment & Parameter Table

   Item	Specification
   Transmission Model	VT1 CVT / VT1-27
   OE Interchange Part Number	VT1-27, 1848600B-QX
   Gross Weight	78 KG
   Package Dimension	76cm × 58cm × 46cm
   Fit Vehicle List	MINI Cooper R50 2001–2006 1.4L /1.6L; MINI R52 Cabrio 2005–2008 1.6L; Rover 25 2000–2005 1.4L/1.6L; Rover 45 2000–2005 1.6L/1.8L; MG ZR ZS 2001–2005 1.4L/1.8L; BYD F3 F3R G3 L3 2009–2011 1.5L/1.8L

3. Inspection & Testing Standard We follow strict remanufacturing workflows for every VT1 CVT assembly. All internal parts are disassembled and ultrasonic cleaned to remove sludge, metal debris and old CVT fluid. We inspect pulley taper surface, belt condition, bearing clearance, valve bore wear and solenoid performance. All vulnerable consumable parts are renewed. After reassembly, each finished gearbox runs on a dedicated CVT dyno. We test line pressure, ratio change, lock-up function and response under different load and speed cycles. We record full test data and assign a unique trace batch code for each unit. Only units that pass all test criteria are released for shipment.
4. Core Competitive Advantages Full remanufacture instead of simple used cleaning, the core steel push belt is replaced with new high-quality belt. Each unit is dyno tested individually, not just static visual inspection, which greatly reduces on-car failure rate. Wide compatibility covering MINI Rover MG and BYD VT1 applications, helps reduce your SKU inventory burden. Calibrated strictly to original hydraulic parameters, no extra modification required after installation. Factory direct wholesale, stable stock and fast lead time for urgent repair orders. Free VIN matching service to confirm VT1 variant difference before shipment to avoid wrong fitment. Neutral private label packing is available for B-end wholesale partners.
5. Professional Installation Guidance Before installation, confirm the VT1 variant matches your original gearbox, distinguish between European MINI version and Chinese BYD version, these two variants cannot be interchanged. Fully drain old CVT fluid, replace transmission filter and gaskets, and thoroughly flush the oil cooler to eliminate metal contamination. Inspect the wiring harness connector for corrosion and pin damage before connection. After installation, fill with approved CVT fluid, clear DTC fault codes and complete CVT adaptive learning procedure. Run light-load road test first, check for shudder, pressure fluctuation and abnormal codes. If pressure faults persist, double-check oil cooler and pulley mechanical damage. Our technical team provides remote support for abnormal cases.
6. Packaging & Transportation Each remanufactured VT1 CVT gearbox is wrapped with anti-rust film and heavy shockproof foam, then packed into a reinforced 5-layer export wooden crate. The crate is marked with part number, transmission model, gross weight and batch number. Desiccant is placed inside to prevent moisture corrosion during long sea transit. We support sea freight, air freight and international express. Custom shipping marks can be printed on crates for bulk orders. We can provide commercial invoice, packing list, dyno test report and certificate of origin for your customs clearance.
7. Factory Strength Introduction We are a professional automatic transmission parts manufacturer with 20 years of experience, supplying remanufactured gearbox assemblies, valve bodies and overhaul kits to more than 150 countries. We have a dedicated CVT remanufacturing workshop, professional CVT dyno test benches and independent QC laboratory. Our senior transmission engineers are familiar with the classic VT1 CVT common failure modes. We maintain safety stock for mainstream VT1 assemblies to guarantee stable supply. We provide long-term technical support, failure diagnosis guides and after-sales service for all wholesale clients.
8. FAQ 

Q1: What differences in hydraulic circuits and wiring pin definitions exist between the MINI version, Rover version and BYD version of VT1 CVT, and why they cannot be directly interchanged?

A: The MINI VT1, Rover VT1 and BYD VT1 share similar outer housing appearances, but their internal hydraulic passages, solenoid calibration curves and wiring harness pin layouts are engineered separately for original vehicle platforms. The MINI variant is tuned for small-displacement European petrol engines with specific pressure settings for frequent start-stop and low-speed creep. The Rover version matches the original ECU logic of Rover 25 and 45, while the BYD VT1 has adjusted oil pressure thresholds and sensor circuits to work with BYD’s native control unit. If you install the wrong variant on a vehicle, you will face persistent fault codes, abnormal transmission ratio fluctuation, acceleration shudder or even complete loss of drive. Before shipment, our team will cross-check the VIN and original part number you provide, and confirm the correct VT1 variant strictly to avoid costly returns and rework for your repair shop customers. We also mark each variant clearly on the wooden crate label for easy warehouse identification.

Q2: What is your standard for reconditioning the tapered pulley surfaces of VT1 CVT, and will you replace the pulley assembly directly when wear exceeds the acceptable limit?

A: The tapered pulley surface is one of the most failure-prone components on the VT1 CVT, as scratches and uneven wear will directly trigger steel belt slipping and shudder. After full disassembly, our technicians inspect every pulley surface with precision gauges. Minor, shallow scuff marks can be repaired by professional fine polishing under controlled parameters to restore the smooth taper angle. However, once the wear depth exceeds our tolerance, or there are deep gouges, heat discoloration and hard spots on the working surface, we discard the old pulley and fit a brand-new replacement pulley assembly instead of risky rework. This strict rule is critical, because poor pulley surface condition will make the brand-new push belt wear out quickly even after you install a rebuilt transmission. We record all pulley inspection data for each unit and keep the traceable test records for your quality audit.

Q3: What is the complete adaptive learning procedure required after installing this remanufactured VT1 CVT, and can regular generic OBD scanners finish this process?

A: After mounting the remanufactured VT1 CVT and filling with qualified CVT fluid, the adaptive learning sequence is mandatory to synchronize the transmission with the vehicle ECU. The process includes idle pressure adaptation, low-speed creep learning, ratio response calibration and lock-up adaptation. Many basic generic OBD scanners can only read and clear fault codes, but they lack the dedicated function to run CVT adaptive reset for the VT1 system. You will need a professional diagnostic tool that supports Punch CVT special functions to complete the relearn properly. If the adaptation step is skipped or incomplete, customers may complain about delayed engagement, rough shifting or false pressure fault codes even if the transmission itself is in perfect condition. We supply detailed English installation guides and adaptive learning notes for all B-end buyers, and our technical engineers can offer remote guidance when your repair teams encounter difficulties during relearn.