JDM 2008–2010 Honda Odyssey M29A 3.5L V6 VCM 5-Speed Automatic FWD Transmission

Restore dependable shifting performance in your Honda Odyssey with this low-mileage JDM M29A 5-speed automatic transmission from J-Spec Auto Sports.

This genuine Honda OEM transmission fits compatible 2008–2010 Honda Odyssey EX-L and Touring models equipped with the 3.5L V6 VCM engine and front-wheel drive.

The transmission carries the M29A identification code and serial number M29A 1000816. In addition, actual inventory photos allow customers and installers to compare the replacement transmission with the original unit before ordering.

Because Honda used several transmission configurations across Odyssey models and trim levels, proper identification remains important. Therefore, verify the original transmission code, VIN, engine configuration, electrical connectors, sensors, torque converter, mounts, and external components before installation.

Quick Details

• Make: Honda
• Model: Odyssey
• Model Years: 2008–2010
• Trim Applications: EX-L / Touring VCM
• Transmission Code: M29A
• Serial Number: M29A 1000816
• Engine Family: J35-Series / J35A
• Engine Size: 3.5L
• Engine Configuration: V6
• VCM: Yes
• Transmission Type: Automatic
• Number of Gears: 5-Speed
• Drivetrain: Front-Wheel Drive / FWD
• Transmission Fluid: Honda ATF DW-1
• Condition: Used JDM / Low Mileage
• Origin: Japan
• Item ID: 253814
• SKU: MT952 M29A Transmission
• Actual Product Photos: Yes
• Warranty: 30-Day Limited Warranty
• Shipping: Nationwide Freight Shipping
• Installation: Affordable Installation Available
• Local Pickup: Richmond, Virginia

Honda Odyssey M29A Automatic Transmission

The M29A is a Honda 5-speed automatic transmission used in compatible Odyssey 3.5L V6 applications.

It uses a conventional torque converter and electronically controlled automatic shifting. Therefore, this transmission is not a CVT.

The primary application for this unit is:

2008–2010 Honda Odyssey → 3.5L V6 VCM → M29A → 5-Speed Automatic → FWD

Matching these specifications with the original vehicle helps ensure proper fitment.

3.5L J35-Series V6 VCM Application

This M29A transmission pairs with compatible Honda J35-Series 3.5L V6 engines equipped with Variable Cylinder Management, or VCM.

JDM applications may also use J35A identification. However, engine displacement alone does not confirm transmission compatibility.

For that reason, customers should verify the M29A transmission code and complete vehicle configuration before purchasing.

VCM — Variable Cylinder Management

This transmission targets compatible Odyssey models equipped with Honda’s Variable Cylinder Management system.

VCM allows the engine to reduce the number of active cylinders under certain driving conditions. As a result, Honda used specific engine and drivetrain configurations with these vehicles.

The VCM designation remains especially important when matching a replacement transmission.

Vehicle Compatibility

2008 Honda Odyssey EX-L 3.5L V6 VCM

• M29A transmission
• 5-speed automatic
• Front-wheel drive
• 3.5L V6 VCM
• Verify original transmission identification

2008 Honda Odyssey Touring 3.5L V6 VCM

• M29A transmission
• 5-speed automatic
• Front-wheel drive
• Verify VIN and original transmission

2009 Honda Odyssey EX-L 3.5L V6 VCM

• 3.5L V6 VCM
• 5-speed automatic
• Front-wheel drive
• Verify electrical configuration

2009 Honda Odyssey Touring 3.5L V6 VCM

• M29A-compatible application
• Automatic transmission
• Front-wheel drive
• Verify original transmission code

2010 Honda Odyssey EX-L 3.5L V6 VCM

• 3.5L V6 VCM
• 5-speed automatic
• Front-wheel drive
• Verify complete transmission configuration

2010 Honda Odyssey Touring 3.5L V6 VCM

• M29A transmission
• 3.5L V6 VCM
• Automatic
• Front-wheel drive
• Verify original transmission and external components

M29A Transmission Code

The transmission code for this individual unit is:

M29A

The individual transmission serial number is:

M29A 1000816

Matching the transmission code remains one of the most important steps when purchasing a replacement Honda automatic transmission.

Additionally, compare the electrical connectors, sensors, pressure switches, torque converter, case, and mounting locations with the original transmission.

M29A vs. M97A

Honda also used other transmission codes in Odyssey applications, including M97A.

M29A and M97A should not automatically be treated as identical transmissions.

Differences may involve:

• Internal components
• Final-drive configuration
• Valve body
• Solenoids
• Pressure switches
• Sensors
• Electrical connectors
• Torque converter
• Transmission case
• Electronic calibration

Consequently, always match the original transmission code and physical configuration before installation.

Front-Wheel-Drive Transmission

This M29A transmission targets front-wheel-drive Honda Odyssey applications.

The transmission and front differential operate together as a transaxle assembly. Therefore, the front axles connect directly to the transmission.

Before installation, inspect the axle openings, seals, splines, mounts, and related drivetrain components.

JDM-to-USDM Fitment

This transmission comes from a Japanese-market application. Although the main transmission assembly may match compatible U.S.-market vehicles, some external components can differ.

Before installation, compare the replacement transmission and original transmission side by side.

Check:

• M29A transmission identification
• Transmission case
• Bellhousing
• Torque converter
• Electrical connectors
• Shift solenoids
• Pressure-control solenoids
• Pressure switches
• Speed sensors
• Range switch
• Cooler fittings
• Transmission mounts
• Axle openings
• Wiring
• External brackets

When necessary, transfer compatible external components from the original USDM transmission.

Keep the original transmission and related components until installation and road testing are complete.

What Is Included?

The sale includes the actual M29A transmission shown in the product photos.

Depending on the individual unit and attached components, the transmission may include:

• M29A 5-speed automatic transmission assembly
• Transmission case
• Internal transmission components
• Valve-body components
• Attached sensors
• Attached solenoids
• Attached pressure switches
• Electrical connectors
• Torque converter when pictured
• External brackets when pictured

Only components shown in the actual product photos or specifically stated in the listing are included.

Actual Product Photos

The photographs in this listing show the actual transmission offered for sale.

Customers can use the images to compare:

• M29A identification
• Serial number
• Transmission case
• Bellhousing
• Torque converter
• Electrical connectors
• Sensors
• Solenoids
• Pressure switches
• Axle openings
• Cooler fittings
• Mounting locations
• Overall condition

Actual inventory photos provide an additional layer of fitment verification before ordering.

INSTALLATION PROCEDURE

Diagnose the Original Transmission Failure

Before installing the replacement M29A transmission, determine why the original transmission failed.

Possible causes include:

• Internal clutch wear
• Valve-body problems
• Shift-solenoid faults
• Pressure-control problems
• Pressure-switch faults
• Torque-converter failure
• Overheating
• Low transmission fluid
• Contaminated ATF
• Restricted transmission cooler
• Sensor problems
• Wiring faults
• Worn engine or transmission mounts

Correcting the original problem helps protect the replacement transmission.

Flush the Transmission Cooler and Lines

Thoroughly flush the transmission cooler and cooler lines before installing the replacement transmission.

A failed automatic transmission can circulate metal particles, clutch material, friction debris, and contaminated fluid throughout the cooling circuit.

Therefore:

• Flush the transmission cooler.
• Flush the cooler lines.
• Inspect the system for restrictions.
• Remove all contaminated fluid.
• Replace components that cannot be cleaned properly.

Never install a replacement transmission onto a contaminated cooling system.

Use Honda ATF DW-1

Fill the transmission with:

Honda ATF DW-1

Honda ATF DW-1 supersedes the older Honda ATF-Z1 specification for current service.

Do not use:

• Honda CVT fluid
• HCF-2
• Gear oil
• Unverified universal ATF

Using the correct transmission fluid supports proper hydraulic pressure, lubrication, clutch engagement, shift quality, torque-converter operation, and temperature control.

Never Reuse Old Transmission Fluid

Always use fresh transmission fluid.

Old ATF from a failed transmission may contain:

• Metal particles
• Clutch material
• Friction debris
• Oxidized fluid
• Dirt
• Other contaminants

Fresh Honda ATF DW-1 helps protect the replacement transmission from contamination.

Inspect the Torque Converter

Compare the replacement torque converter with the original unit.

Inspect:

• Converter hub
• Splines
• Mounting points
• Seal surface
• Overall configuration

Additionally, make sure the torque converter seats completely inside the transmission before installation.

Never use the bellhousing bolts to force the transmission against the engine.

Improper torque-converter installation can damage the transmission pump.

Replace Accessible Seals

Inspect accessible seals while the transmission remains outside the vehicle.

Replace worn or questionable:

• Front torque-converter seal
• Axle seals
• Cooler-line seals
• Oil-pan gasket when applicable
• Other accessible transmission seals

Replacing these components before installation can help prevent future leaks.

Inspect Electrical Components

Compare the replacement transmission with the original transmission.

Inspect:

• Electrical connectors
• Shift solenoids
• Pressure-control solenoids
• Pressure switches
• Speed sensors
• Range switch
• Wiring

Look for damaged connectors, bent pins, corrosion, broken wiring, or physical damage.

When necessary, transfer compatible original components to the replacement transmission.

Inspect Engine and Transmission Mounts

Check all mounts for:

• Cracks
• Separation
• Excessive movement
• Damaged brackets
• Loose hardware

Worn mounts can cause vibration, clunking, and harsh engagement.

Inspect the Front Axles

Inspect:

• CV joints
• Axle splines
• CV boots
• Intermediate shaft components
• Excessive play
• Grease leakage

Damaged axle components can create vibration or noise that may resemble transmission problems.

Scan the Vehicle Before Removing the Original Transmission

Record all diagnostic trouble codes before removing the failed transmission.

Pay particular attention to:

• Shift-solenoid codes
• Pressure-switch codes
• Pressure-control codes
• Gear-ratio codes
• Torque-converter codes
• Speed-sensor codes
• Engine codes
• Communication faults

Use these codes to help identify the cause of the original transmission problem.

PCM Reset and Transmission Relearn

After installation, complete any required:

• PCM reset
• Diagnostic trouble-code reset
• Transmission initialization
• Adaptive relearn
• Road-test relearn

Honda-compatible diagnostic equipment may be required for certain procedures.

INITIAL STARTUP CHECKLIST

Before road testing:

• Confirm M29A transmission code.
• Confirm serial number M29A 1000816.
• Verify 2008–2010 Odyssey application.
• Confirm EX-L or Touring VCM application.
• Confirm front-wheel-drive configuration.
• Compare the replacement and original transmissions.
• Flush the transmission cooler.
• Flush the cooler lines.
• Inspect or replace accessible seals.
• Properly seat the torque converter.
• Fill with Honda ATF DW-1.
• Verify the correct ATF level.
• Connect all electrical connectors.
• Inspect pressure switches.
• Inspect solenoids.
• Inspect sensors.
• Check cooler-line connections.
• Verify axle installation.
• Confirm Park engagement.
• Confirm Reverse engagement.
• Confirm Drive engagement.
• Check warning lights.
• Scan for diagnostic trouble codes.
• Inspect for transmission-fluid leaks.

INITIAL ROAD TEST

Begin with a gentle road test.

Monitor:

• Reverse engagement
• Drive engagement
• 1–2 shift
• 2–3 shift
• 3–4 shift
• 4–5 shift
• Downshifts
• Torque-converter lockup
• Shift flare
• Slipping
• Shudder
• Vibration
• Abnormal noises
• Warning lights
• ATF leaks

Avoid aggressive acceleration until the transmission operates normally through all gears.

After the road test:

• Recheck the ATF level.
• Inspect for leaks.
• Scan for diagnostic trouble codes.
• Check cooler connections.
• Inspect mounting hardware.

COMMON SIGNS OF HONDA ODYSSEY TRANSMISSION PROBLEMS

A failing Honda Odyssey automatic transmission may cause:

• Delayed Drive engagement
• Delayed Reverse engagement
• Harsh shifting
• Transmission slipping
• Shift flare
• Shudder
• Failure to upshift
• Torque-converter problems
• Abnormal transmission noise
• Burnt transmission fluid
• Warning lights
• Diagnostic trouble codes
• ATF leaks

However, transmission-related symptoms can also result from faulty solenoids, pressure switches, sensors, wiring, torque-converter problems, incorrect fluid, mounts, or axle components.

Proper diagnosis should always come before complete transmission replacement.

WHY CHOOSE THIS JDM M29A TRANSMISSION?

This JDM M29A transmission provides an OEM Honda replacement option for compatible Odyssey models with a damaged, worn, or failed original transmission.

Key benefits include:

• Genuine Honda OEM transmission
• M29A transmission identification
• Individual serial number M29A 1000816
• 3.5L V6 VCM application
• 5-speed automatic configuration
• Front-wheel drive
• Used JDM low-mileage unit
• Actual inventory photos
• Individual Item ID
• Nationwide freight shipping
• Affordable installation available
• 30-day limited warranty

WHY BUY FROM J-SPEC AUTO SPORTS?

J-Spec Auto Sports has specialized in Japanese engines, transmissions, and drivetrain components for more than 20 years.

Customers receive the advantage of:

• Actual product photographs
• Individual transmission identification
• Exact transmission code information
• Individual serial number
• Application-specific fitment information
• Nationwide freight shipping
• Local Richmond, Virginia pickup
• Affordable installation options
• Limited warranty coverage
• Experienced JDM drivetrain support

INDIVIDUAL INVENTORY INFORMATION

Transmission Code: M29A
Serial Number: M29A 1000816
Vehicle: Honda Odyssey
Years: 2008–2010
Engine: J35-Series / J35A 3.5L V6 VCM
Transmission: 5-Speed Automatic
Drivetrain: FWD
Item ID: 253814
SKU: MT952 M29A Transmission
Condition: Used JDM / Low Mileage
Warranty: 30-Day Limited Warranty

30-DAY LIMITED WARRANTY

This individual transmission includes a 30-day limited parts warranty, subject to J-Spec Auto Sports’ current warranty terms and installation requirements.

Keep installation and maintenance documentation, including records for:

• Honda ATF DW-1
• Transmission cooler flushing
• Cooler-line flushing
• Seal replacement
• Torque-converter installation
• Professional installation
• Diagnostic procedures
• Related maintenance

FREQUENTLY ASKED QUESTIONS

What transmission code is this Honda Odyssey transmission?

This transmission carries the M29A transmission code.

What is the serial number?

The individual serial number is M29A 1000816.

What years does this transmission fit?

This transmission targets compatible 2008–2010 Honda Odyssey EX-L and Touring VCM applications.

What engine works with the M29A transmission?

This unit targets compatible Honda J35-Series / J35A 3.5L V6 VCM applications.

Is the M29A a 5-speed automatic transmission?

Yes. This M29A is a conventional 5-speed automatic transmission.

Is the M29A a CVT?

No. The M29A is not a CVT.

Is this transmission front-wheel drive?

Yes. This transmission targets compatible FWD Honda Odyssey applications.

Does it fit a 2008 Honda Odyssey EX-L?

It targets compatible 2008 Odyssey EX-L 3.5L V6 VCM models after transmission-code and fitment verification.

Does it fit a 2008 Honda Odyssey Touring?

It targets compatible 2008 Odyssey Touring VCM applications.

Does it fit a 2009 Honda Odyssey?

It targets compatible 2009 EX-L and Touring VCM applications.

Does it fit a 2010 Honda Odyssey?

It targets compatible 2010 EX-L and Touring VCM applications.

Does it fit every 2008–2010 Honda Odyssey?

No. Verify the original transmission code, VIN, trim, VCM configuration, connectors, sensors, and external components before ordering.

Is M29A the same as M97A?

M29A and M97A are separate Honda transmission codes. Complete interchangeability should not be assumed without verifying the vehicle and transmission configuration.

What transmission fluid does the M29A use?

Use Honda ATF DW-1 for current service.

Can I use Honda CVT fluid?

No. This is a conventional 5-speed automatic transmission and does not use Honda CVT fluid.

Should the transmission cooler be flushed?

Yes. Thoroughly flush the transmission cooler and cooler lines before installing the replacement transmission.

Can old transmission fluid be reused?

No. Always fill the replacement transmission with fresh, correct-specification ATF.

Should the axle seals be replaced?

Inspect the axle seals before installation and replace worn or questionable seals.

Should the front transmission seal be replaced?

Inspect the front torque-converter seal before installation. Replacing a questionable seal while the transmission remains outside the vehicle can prevent additional labor later.

Does the torque converter need to be seated before installation?

Yes. The torque converter must seat completely inside the transmission before installation.

Can parts from the original transmission be transferred?

Yes. Compatible sensors, solenoids, pressure switches, brackets, or other external components may need to transfer from the original USDM transmission when necessary.

Does the transmission require a relearn?

Depending on the vehicle, PCM reset, initialization, or adaptive relearn procedures may be necessary after installation.

Is this transmission rebuilt?

No. This is a used OEM JDM transmission, unless otherwise specifically stated.

Does this transmission have a warranty?

Yes. This individual transmission includes a 30-day limited warranty subject to J-Spec Auto Sports’ warranty terms.

Are the pictures of the actual transmission?

Yes. The product photographs show the actual inventory unit offered for sale.

Does J-Spec Auto Sports offer installation?

Yes. Affordable installation is available.

Does J-Spec Auto Sports ship nationwide?

Yes. Nationwide freight shipping is available throughout the continental United States.

ORDER YOUR JDM HONDA ODYSSEY M29A TRANSMISSION

Replace your damaged or failed Honda Odyssey transmission with this low-mileage JDM M29A 5-speed automatic FWD transmission.

Designed for compatible 2008–2010 Honda Odyssey EX-L and Touring 3.5L V6 VCM applications, this genuine Honda OEM transmission offers an excellent replacement option when properly matched to the original drivetrain.

Transmission Code: M29A
Serial Number: M29A 1000816
Engine: J35-Series / J35A 3.5L V6 VCM
Transmission: 5-Speed Automatic
Drivetrain: FWD
Item ID: 253814
SKU: MT952 M29A Transmission
Warranty: 30-Day Limited Warranty

Verify the original M29A transmission code, VIN, VCM configuration, electrical connectors, torque converter, sensors, and physical configuration before ordering.