Remanufactured 7DCT220 Transmission Valve Body Assembly for Bestune T77 Hongqi

1. Product Overview

This complete 7DCT220 dry dual clutch transmission assembly matches Bestune T77 equipped with 1.2L turbo engine.

Reference OEM number: 1700010VD04, GA4GA12TD.

7DCT220 is a widely used 7-speed dry DCT for Chinese domestic SUV models. Common serious failures include clutch burning, internal abnormal noise, slipping, gear missing and housing damage which cannot be repaired by simply replacing individual mechatronic valve body.

Our used gearbox is fully disassembled inspected, damaged internal components replaced and bench running tested. Ready-to-install whole transmission for auto repair workshops.

2. Fitment & Parameter Table

3. Inspection & Testing Procedure

1. Overall Appearance Check: Inspect housing for cracks, collision deformation and oil leakage traces.
2. Full Disassembly Inspection: Check gears, synchronizers, shafts, bearings and dual clutch assembly for wear, ablation and damage.
3. Worn Parts Replacement: Replace defective bearings, seals and damaged friction components with qualified spare parts.
4. Clearance Calibration: Adjust clutch clearance, gear meshing clearance according to factory standard parameters.
5. Continuous Bench Running Test: Simulate forward/reverse shifting and load operation to check abnormal noise, shudder and oil leakage.
6. Anti-rust Treatment & Export Packing: Anti-rust protection + customized EPE foam + heavy export carton or plywood case to avoid damage during long-distance transportation.

4. Core Product Advantages

• Complete Whole Transmission Assembly

Integrated finished gearbox including housing, dual clutch, gear sets, input/output shafts. No need to source scattered separate components.

• Strict Bench Running Test

Every finished 7DCT220 gearbox undergoes continuous cycle test. Abnormal noise, oil leakage and shifting defects are eliminated before delivery, reducing after-sales risks.

• 1:1 OEM Mounting Dimension

Installation holes, wiring interfaces and connection dimensions are consistent with original gearbox. No modification required during vehicle replacement to shorten overhaul time.

• Flexible Wholesale Support

1 unit minimum trial order. Tiered discount for bulk purchases. Neutral blank packing and custom label printing available. Warranty terms negotiable for long-term overseas distributors.

5. Professional Installation Tips

1. Lift vehicle, drain original DCT transmission fluid, disconnect drive shafts and wiring harness.
2. Remove transmission fixing bolts, separate the gearbox assembly from engine and take it out.
3. Clean engine flywheel mounting surface, inspect flywheel flatness and release bearing condition.
4. Install 7DCT220 transmission, tighten bolts following factory torque specification, reconnect all pipelines and wiring plugs.
5. Fill with dedicated DCT transmission fluid, clear ECU fault codes, complete adaptive learning and road test for smooth shifting.

6. Factory Introduction

Our factory specializes in complete transmission assemblies, valve bodies, clutches and overhaul spare parts for Chinese domestic passenger vehicles including Bestune, Hongqi, Great Wall, Geely, BYD, Chery.

We have professional transmission testing equipment and experienced technical team. We supply Chinese auto spare parts to overseas wholesalers, repair chains and auto warehouses in Southeast Asia, Middle East, Eastern Europe. Stable stock, factory direct price and dedicated English technical support.

7. FAQ

Q1: Can 1701410A6K, 1701410A6KA and 1710410A6KXX valve bodies with different OE suffixes be directly interchanged for installation?

A1: These three OE numbers correspond to upgraded versions of the 7DCT220 valve body. Their basic hydraulic structure is consistent, but there are slight differences in internal control calibration. Direct replacement may lead to abnormal shifting. We recommend you provide the complete VIN or original part number of the vehicle before ordering to confirm full compatibility and avoid after-sales issues.

Q2: Apart from this 7DCT220 valve body, does your factory supply a full range of DCT and CVT valve bodies for Bestune, Hongqi and other Chinese car brands and support mixed bulk orders?

A2: Yes. We provide various transmission valve bodies suitable for Bestune, Hongqi, Great Wall and other domestic Chinese vehicles, including multiple DCT and CVT models. You can combine the 7DCT220 valve body with other spare parts into one consolidated shipment. Mixed orders enjoy unified tiered prices, effectively helping overseas auto parts warehouses cut overall logistics costs.

Q3: After installing the 7DCT220 valve body, does the TCU need adaptive learning? What can repair shops do without special diagnostic equipment for Chinese vehicles?

A3: Adaptive learning for TCU is required after installation to achieve smooth shifting. If repair shops lack dedicated diagnostic devices, they can perform self-learning through standardized road test procedures following our operation guide. Please contact our English technical team to obtain detailed steps to reduce risks such as shudder and delayed gear engagement.