JDM 2006–2011 HONDA CIVIC SXEA R18A 1.8L 5-SPEED AUTOMATIC TRANSMISSION

Replace your worn or failed Honda Civic transmission with this low-mileage JDM Honda SXEA 5-speed automatic FWD transmission from J-Spec Auto Sports.

This genuine used OEM Honda transmission was imported from Japan and targets compatible 2006–2011 Honda Civic models equipped with the R18A / R18A1 1.8L gasoline engine, front-wheel drive, and conventional 5-speed automatic transmission.

For Google, Bing, AI search, repair shops, and customers, the strongest product relationship is:

Honda Civic → 2006–2011 → R18A / R18A1 1.8L → SXEA → 5-Speed Automatic → FWD

The exact transmission offered on this page is:

SXEA 1021995

and:

Item ID 55391

Because Honda used several transmission codes within this Civic generation, buyers should verify the complete transmission configuration before ordering.

QUICK DETAILS

• Manufacturer: Honda
• Vehicle: Civic
• Model Years: 2006–2011
• Transmission Code: SXEA
• Serial Number: SXEA 1021995
• Engine Family: R18A / R18A1
• Displacement: 1.8L
• Engine Type: Naturally Aspirated Inline 4-Cylinder
• Transmission Type: 5-Speed Automatic
• Gears: 5
• Drivetrain: Front-Wheel Drive / FWD
• Condition: Used OEM JDM / Low Mileage
• Origin: Japan
• Item ID: 55391
• SKU: MT644
• Actual Product Photos: Yes
• Warranty: 90 Days
• Shipping: Nationwide Freight Shipping
• Installation: Affordable Installation Available

SXEA TRANSMISSION CODE

The most important transmission identifier for Item 55391 is:

SXEA

The complete individual identification is:

SXEA 1021995

Use this exact code throughout the product page:

• Product title
• H1
• Short description
• Long description
• WooCommerce specifications
• Image ALT text
• Image titles
• FAQ
• Product schema
• Internal inventory records

A strong, consistent transmission identity helps customers find the correct unit and helps search engines and AI systems understand exactly what J-Spec Auto is selling.

R18A / R18A1 1.8L ENGINE APPLICATION

This transmission targets compatible Civic applications using Honda’s:

R18A / R18A1 1.8L gasoline engine family

For U.S.-market SEO, R18A1 is an especially valuable search term because buyers and repair shops frequently search by engine code.

However, do not determine fitment from engine code alone.

The correct verification chain is:

2006–2011 Civic + R18A/R18A1 1.8L + Automatic + FWD + Compatible SXEA Configuration

5-SPEED AUTOMATIC – NOT A CVT

The SXEA is a conventional:

5-Speed Automatic Transmission

It is not a continuously variable transmission.

Recommended WooCommerce specifications:

Type: 5-Speed Automatic

Gears: 5

Drivetrain: FWD

Avoid vague wording such as:

Type: Automatic

when a more precise transmission description is available.

FRONT-WHEEL DRIVE / FWD

The standard gasoline-powered Honda Civic application targeted by this listing is:

Front-Wheel Drive / FWD

For U.S. automotive search terminology, use FWD rather than relying primarily on “2WD.”

Recommended wording:

5-Speed Automatic FWD Transmission

instead of:

Automatic 2WD Transmission

“FWD” better matches how customers, repair shops, Google, Bing, and automotive databases commonly describe this drivetrain.

2006 HONDA CIVIC 1.8L AUTOMATIC

Item 55391 targets compatible:

2006 Honda Civic 1.8L FWD automatic

applications using the proper SXEA configuration.

Before ordering, verify the original transmission code and physical configuration.

2007 HONDA CIVIC 1.8L AUTOMATIC

This SXEA may serve compatible:

2007 Honda Civic R18A/R18A1 1.8L FWD automatic

applications when transmission identification and configuration match.

2008 HONDA CIVIC 1.8L AUTOMATIC

This transmission targets properly verified:

2008 Honda Civic 1.8L 5-speed automatic FWD

applications.

Compare the original transmission before installation.

2009 HONDA CIVIC 1.8L AUTOMATIC

For a 2009 Civic, verify:

• R18A/R18A1 engine
• FWD drivetrain
• 5-speed automatic configuration
• Transmission code
• Sensors
• Solenoids
• Electrical connectors
• Torque converter
• Case configuration

before ordering.

2010 HONDA CIVIC 1.8L AUTOMATIC

Item 55391 targets compatible:

2010 Honda Civic 1.8L FWD automatic

applications after complete transmission verification.

2011 HONDA CIVIC 1.8L AUTOMATIC

This transmission can target compatible:

2011 Honda Civic R18A/R18A1 1.8L automatic FWD

applications when the transmission configuration matches.

Use current Honda service fluid specifications during installation.

NOT FOR HONDA CIVIC HYBRID

The current live J-Spec description says this transmission is suitable for:

“hybrid or standard Civic models.”

Remove that statement.

The Civic Hybrid uses a completely different hybrid drivetrain with a smaller gasoline engine, Integrated Motor Assist system, and CVT.

The SXEA on Item 55391 is a conventional 5-speed automatic transmission for compatible standard gasoline-powered Civic 1.8L applications.

Therefore:

SXEA ≠ Civic Hybrid CVT

Add:

Not for Honda Civic Hybrid

to the product FAQ and fitment notice.

NOT FOR HONDA CIVIC SI

Do not advertise Item 55391 for:

Honda Civic Si

applications.

The Civic Si uses a different engine and manual transmission configuration.

Therefore, exclude:

• Civic Hybrid
• Civic Si

from this listing.

SXEA VS. SPCA VS. MDXA VS. MWXA

Honda Civic 1.8L JDM transmission inventory may carry several transmission codes, including:

• SXEA
• SPCA
• MDXA
• MWXA

Do not automatically treat every code as interchangeable.

Different suffix codes may correspond to differences in:

• Internal gearing
• Final drive
• Valve body
• Solenoids
• Pressure switches
• Sensors
• Electrical connectors
• Torque converter
• Case revisions
• Production application
• Calibration

Therefore:

SXEA does not automatically equal SPCA, MDXA, or MWXA.

The physical transmission on this page is:

SXEA 1021995

so SXEA should remain the primary product identity.

Related codes can appear naturally in an interchange FAQ for search coverage, but they should not dilute the primary code.

WHY SXEA SHOULD BE THE PRIMARY SEO TERM

Customers searching for a replacement transmission frequently search by transmission code.

Examples include:

SXEA transmission

Honda SXEA transmission

Civic SXEA transmission

SXEA R18A

SXEA 1.8L transmission

2008 Honda Civic SXEA transmission

For that reason, use SXEA near the beginning of:

• Product title
• H1
• Meta description
• Short description
• First paragraph
• Product specifications
• Image ALT text
• FAQ

However, avoid excessive repetition or unnatural keyword stuffing.

EXACT INVENTORY IDENTIFICATION

This page sells a specific physical transmission.

Use:

Transmission Code: SXEA

Serial Number: SXEA 1021995

Item ID: 55391

SKU: MT644

This distinguishes Item 55391 from J-Spec’s other SXEA Civic transmissions.

Individual serial numbers also help Google and AI systems recognize that separate pages represent separate physical inventory rather than duplicate copies of one product.

ACTUAL PRODUCT PHOTOS

The photographs on this listing should represent the actual Item 55391 transmission.

Customers should compare the photos with their original unit before purchasing.

Photograph and clearly show:

• SXEA identification
• Serial number SXEA 1021995
• Bellhousing
• Torque converter if included
• Sensors
• Solenoids
• Electrical connectors
• Axle openings
• Cooler fittings
• Transmission mounts
• Case configuration

Actual code-label photographs are particularly valuable for conversion and search confidence.

JDM-TO-USDM FITMENT VERIFICATION

Japanese-market and U.S.-market Honda transmissions can differ externally or electronically even when they belong to related transmission families.

Before installation, place the replacement SXEA beside the original transmission.

Compare:

• Full transmission code
• Bellhousing
• Transmission case
• Torque converter
• Valve body
• Shift solenoids
• Pressure-control solenoids
• Pressure switches
• Speed sensors
• Range switch
• Electrical connectors
• Wiring
• Axle openings
• Transmission mounts
• Mounting brackets
• Shift linkage
• Cooler fittings

Transfer compatible original components only when needed and technically verified.

KEEP THE ORIGINAL TRANSMISSION

Do not discard the customer’s original transmission until Item 55391 has been successfully:

• Installed
• Filled
• Checked for leaks
• Road-tested
• Scanned for trouble codes
• Verified for correct shifting

The original transmission may provide compatible:

• Sensors
• Solenoids
• Pressure switches
• Electrical components
• Mounting brackets
• Shift brackets
• Cooler fittings
• External hardware

Keeping it nearby helps solve JDM-to-USDM configuration differences.

TORQUE CONVERTER

Do not advertise the torque converter as included unless Item 55391’s physical inventory and photographs confirm it.

Recommended product-data field:

Torque Converter: Verify Included / Not Included

If a converter is supplied, inspect:

• Converter hub
• Splines
• Pilot
• Seal surface
• Mounting points
• Physical configuration

Most importantly, fully seat the torque converter into the transmission before mating it to the engine.

Never use bellhousing bolts to pull the transmission toward the engine.

Incorrect torque-converter installation can damage the transmission pump.

ELECTRICAL CONNECTORS AND SENSORS

Before installation, compare the replacement transmission with the original.

Inspect:

• Main electrical connector
• Connector shape
• Connector pin count
• Speed sensors
• Pressure switches
• Shift solenoids
• Pressure-control solenoids
• Range switch
• Harness routing

Do not assume every SXEA-related Civic transmission uses identical external electronics.

HONDA ATF DW-1

Use the correct Honda automatic transmission fluid.

For current service, use:

Honda Genuine ATF DW-1

Honda introduced DW-1 as the replacement for the older ATF-Z1 specification.

Do not fill this conventional automatic transmission with:

• Honda HCF-2 CVT fluid
• Generic CVT fluid
• Manual transmission fluid
• Differential gear oil

For older vehicles originally labeled for ATF-Z1, follow current Honda service guidance and verify the applicable fluid specification for the VIN.

DO NOT USE CVT FLUID

This SXEA transmission is not a CVT.

Therefore:

Do not use Honda HCF-2 CVT fluid.

Use the appropriate Honda automatic transmission fluid.

FLUSH THE TRANSMISSION COOLER AND LINES

Before operating the replacement transmission, thoroughly clean the cooler system.

A failed transmission may circulate:

• Metal particles
• Clutch material
• Friction debris
• Contaminated ATF
• Sludge

through the cooler and lines.

If those contaminants remain, they can enter the replacement transmission immediately after startup.

Before installation:

• Flush the transmission cooler.
• Flush cooler lines.
• Confirm unrestricted flow.
• Remove contaminated fluid.
• Replace any cooler that cannot be properly cleaned.

DO NOT REUSE CONTAMINATED ATF

Always start the replacement transmission with fresh, correct-specification Honda ATF.

Do not reuse fluid from the failed transmission.

Old fluid can contain:

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

INSPECT ACCESSIBLE SEALS

While the transmission is outside the vehicle, inspect:

• Torque-converter/front seal
• Axle seals
• Cooler-line seals
• Shift-shaft seal
• Case sealing surfaces

Replacing questionable accessible seals before installation may prevent unnecessary labor later.

INSPECT THE TRANSMISSION PAN

Where appropriate, inspect the transmission pan before installation.

Look for:

• Excessive metal
• Friction material
• Sludge
• Contaminated fluid
• Abnormal debris

Follow the applicable Honda service procedure for any serviceable strainer or filter components.

DIAGNOSE THE ORIGINAL FAILURE

Before replacing the complete transmission, determine why the original unit failed.

Possible causes include:

• Internal clutch wear
• Valve-body problems
• Shift-solenoid faults
• Pressure-control faults
• Pressure-switch faults
• Torque-converter failure
• Incorrect ATF
• Low ATF
• Overheating
• Cooler restriction
• Sensor faults
• Wiring problems
• Worn engine or transmission mounts

Repair external problems before installing the replacement transmission.

INSTALLATION CHECKLIST

Before installation:

• Confirm 2006–2011 Honda Civic.
• Confirm standard gasoline-powered 1.8L application.
• Confirm R18A/R18A1 engine family.
• Confirm FWD drivetrain.
• Confirm 5-speed automatic.
• Verify SXEA compatibility.
• Verify serial SXEA 1021995.
• Compare original and JDM transmission.
• Compare bellhousing.
• Compare torque converter.
• Compare valve body.
• Compare electrical connectors.
• Compare sensors.
• Compare solenoids.
• Compare pressure switches.
• Compare range switch.
• Compare axle openings.
• Compare mounts.
• Compare brackets.
• Compare shift linkage.
• Compare cooler fittings.
• Inspect accessible seals.
• Inspect fluid condition.
• Flush the transmission cooler.
• Flush cooler lines.
• Fill with correct Honda ATF.
• Check for leaks.
• Scan the vehicle for transmission-related codes.

INITIAL STARTUP

After installation:

• Fill with the correct Honda ATF.
• Start the engine.
• Allow fluid to circulate.
• Slowly move the selector through each range.
• Confirm Park.
• Confirm Reverse.
• Confirm Drive.
• Listen for abnormal noise.
• Inspect cooler connections.
• Inspect axle seals.
• Check for leaks.
• Verify fluid level.
• Scan for diagnostic trouble codes.

Avoid aggressive acceleration during initial testing.

MULTIPLE HEAT CYCLES

Perform several controlled operating cycles before returning the vehicle to normal service.

During each cycle:

• Bring the transmission to normal operating temperature.
• Check fluid level correctly.
• Inspect cooler connections.
• Inspect axle seals.
• Confirm Drive engagement.
• Confirm Reverse engagement.
• Look for leaks.

Recheck the fluid level after the transmission has circulated fluid through the converter and cooling circuit.

INITIAL ROAD TEST

Begin with light throttle.

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 noise
• Warning lights
• Fluid leaks

After the road test, scan the vehicle again and recheck the ATF level.

PCM / TRANSMISSION RELEARN

Depending on the repair, components transferred, and vehicle condition, Honda PCM or transmission learning procedures may be required.

After installation:

• Clear applicable transmission DTCs.
• Confirm PCM communication.
• Complete relevant reset or relearn procedures.
• Perform a controlled road test.
• Rescan the vehicle.

Use Honda-capable diagnostic equipment when required.

COMMON HONDA CIVIC AUTOMATIC TRANSMISSION SYMPTOMS

Possible symptoms of a worn or failed transmission include:

• Delayed Reverse
• Delayed Drive
• Harsh shifting
• Slipping
• Shift flare
• Shudder
• Failure to upshift
• Abnormal noise
• Burnt transmission fluid
• Torque-converter problems
• Transmission warning lights
• Diagnostic trouble codes
• No vehicle movement

However, similar symptoms can result from:

• Low ATF
• Incorrect ATF
• Shift-solenoid problems
• Pressure-control solenoid problems
• Sensor failures
• Wiring faults
• Pressure switches
• Torque-converter faults
• Cooler restriction
• Worn mounts
• Engine-related problems

Therefore, diagnose the complete vehicle whenever possible before replacing the transmission.

WHY BUY THIS EXACT SXEA TRANSMISSION?

Item 55391 provides a code-specific OEM Honda JDM transmission option for properly verified Civic 1.8L applications.

Important characteristics include:

• Genuine used OEM Honda JDM transmission
• SXEA code
• Serial SXEA 1021995
• R18A/R18A1 1.8L application
• 5-speed automatic
• FWD configuration
• Actual individual product photos
• Individual Item ID
• 90-day limited warranty
• Nationwide freight shipping
• Installation available

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 can benefit from:

• Actual inventory photographs
• Individual serial-number tracking
• Transmission-code identification
• Honda drivetrain experience
• Fitment assistance
• Nationwide freight shipping
• Local pickup
• Affordable installation options
• Limited warranty coverage

Most importantly, proper code and fitment verification helps reduce costly installation mistakes.

INDIVIDUAL INVENTORY INFORMATION

Make: Honda

Model: Civic

Years: 2006–2011

Engine Family: R18A / R18A1

Engine Size: 1.8L

Transmission Code: SXEA

Serial Number: SXEA 1021995

Transmission Type: 5-Speed Automatic

Gears: 5

Drivetrain: FWD

Fluid: Honda Genuine ATF DW-1 for current service, subject to VIN/service verification

Torque Converter: Verify Included / Not Included

Item ID: 55391

SKU: MT644

Condition: Used OEM JDM / Low Mileage

Warranty: 90 Days

90-DAY LIMITED WARRANTY

Item 55391 currently includes a 90-day limited warranty, subject to J-Spec Auto Sports’ current warranty terms and installation requirements.

Keep installation records documenting:

• Correct Honda ATF
• Cooler flushing
• Cooler-line flushing
• Accessible seal inspection
• Torque-converter installation
• Required component transfers
• Diagnostic procedures
• Professional installation

FREQUENTLY ASKED QUESTIONS

What transmission code is this?

The exact transmission code is:

SXEA

What is the serial number?

SXEA 1021995

What vehicles does this transmission target?

Compatible:

2006–2011 Honda Civic 1.8L gasoline-powered FWD automatic

applications after complete transmission verification.

What engine is this transmission associated with?

It targets Honda:

R18A / R18A1 1.8L

applications.

How many speeds does it have?

The applicable SXEA is a:

5-speed automatic transmission

Is SXEA a CVT?

No.

It is a conventional automatic transmission.

Is this transmission FWD?

Yes.

The target application is:

Front-Wheel Drive / FWD

Is 2WD the same as FWD in this listing?

The Civic application is front-wheel drive.

For SEO and technical clarity, use:

FWD

instead of primarily using “2WD.”

Will it fit a 2006 Honda Civic?

It targets compatible 2006 Civic 1.8L automatic applications when the transmission configuration matches.

Will it fit a 2007 Honda Civic?

It targets compatible 2007 Civic R18A/R18A1 automatic applications after code verification.

Will it fit a 2008 Honda Civic?

It targets compatible 2008 Civic 1.8L FWD automatic applications when configuration matches.

Will it fit a 2009 Honda Civic?

It may fit compatible 2009 Civic 1.8L applications after transmission-code verification.

Will it fit a 2010 Honda Civic?

It targets compatible 2010 Civic 1.8L automatic applications after complete verification.

Will it fit a 2011 Honda Civic?

It targets compatible 2011 Civic R18A/R18A1 automatic applications when the transmission configuration matches.

Will it fit a Honda Civic Hybrid?

No.

Do not use this SXEA conventional automatic transmission for the Civic Hybrid drivetrain.

Will it fit a Civic Si?

No.

The Civic Si uses a different drivetrain and manual transmission.

Is SXEA the same as SPCA?

Do not automatically assume interchangeability.

They are separate Honda transmission codes and should be verified individually.

Is SXEA the same as MDXA?

Do not automatically substitute one code for another without verified interchange information.

Is SXEA the same as MWXA?

Do not assume direct interchange based only on year and engine size.

What transmission fluid should I use?

For current Honda service, use the applicable:

Honda Genuine ATF DW-1

specification after verifying the target VIN and service information.

Can I use Honda HCF-2?

No.

HCF-2 is CVT fluid, while this SXEA is a conventional automatic transmission.

Should I flush the transmission cooler?

Yes.

Thoroughly clean the transmission cooler and cooler lines before operating the replacement transmission.

Should I keep the original transmission?

Yes.

Keep the original unit until Item 55391 has been fully installed and road-tested successfully.

Do I need to transfer parts?

Possibly.

Depending on the application, compatible sensors, solenoids, switches, brackets, wiring, or other external components may need to transfer.

Is the torque converter included?

Verify Item 55391’s actual photos and physical inventory before advertising it as included.

Does the transmission require a relearn?

Honda PCM reset or transmission learning procedures may be appropriate depending on the repair and components used.

Is this transmission rebuilt?

No.

Unless specifically stated otherwise, this is a:

Used OEM JDM Honda transmission imported from Japan

What warranty does it have?

Item 55391 currently carries a:

90-day limited warranty

ORDER ITEM 55391 – HONDA CIVIC SXEA 1.8L TRANSMISSION

Replace your damaged or failed Civic transmission with this low-mileage JDM Honda Civic SXEA 5-speed automatic FWD transmission for compatible 2006–2011 R18A/R18A1 1.8L applications.

Vehicle: Honda Civic
Years: 2006–2011
Engine: R18A / R18A1 1.8L
Transmission Code: SXEA
Serial: SXEA 1021995
Transmission: 5-Speed Automatic
Drivetrain: FWD
Item ID: 55391
SKU: MT644
Warranty: 90 Days

Before ordering, verify the VIN, original transmission code, engine, drivetrain, electrical connectors, sensors, solenoids, pressure switches, torque converter, axle openings, mounts, cooler fittings, and overall transmission case configuration.

For fitment assistance, nationwide freight shipping, or installation information, contact J-Spec Auto Sports before ordering.