This page lists 61 automatic transmission parts for the 2003 Honda Insight, across 14 part types, covering the 995cc L3 ELECTRIC/GAS engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2003 Honda Insight, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. Most of the listed parts are Transmission Fluid (17 parts), Filter (10 parts) and Output Shaft Seal (10 parts). The other 11 part types cover the remaining 24 parts.
Every part on this page is matched to the 995cc L3 ELECTRIC/GAS — the only engine offered in the 2003 Honda Insight.
The most listed brands for 2003 Honda Insight automatic transmission parts are ATP (6 parts), NATIONAL (6 parts) and WJB / INMOTION PARTS (6 parts), plus 17 more brands. Quality grades include Multi-Vehicle, Standard Replacement and CVT.
8 parts on this 2003 Honda Insight page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including VARIOUS MFR PT99442 (Filter) and ATP HO27 (Output Shaft Seal). Click any part number to see every vehicle that part fits.
Case Vent
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 14161 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the vents on a transmission or axle housing.
One part is listed for the 2003 Honda Insight — DORMAN 14161.
Clutch Plate Pack
Friction Plate Pack
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| RAYBESTOS POWERTRAIN | RCP96371 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans. With GPX | View on Amazon |
Steel Plate Pack
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| RAYBESTOS POWERTRAIN | STMHONDA42 | 🇺🇸 US 🇨🇦 CA | Steel Module With Start Clutch | View on Amazon |
| RAYBESTOS POWERTRAIN | STMHONDA71 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans.Steel Module Without Start Clutch | View on Amazon |
This table covers the clutch-plate packs inside the transmission or transfer case.
3 Clutch Plate Pack parts for the 2003 Honda Insight come from RAYBESTOS POWERTRAIN.
In the Friction Plate Pack grade, RAYBESTOS POWERTRAIN supplies 1 part: grouped under the catalog's "Friction Plate Pack" designation — the notes column spells out what sets them apart. A representative part number is RAYBESTOS POWERTRAIN RCP96371.
The Steel Plate Pack section lists 2 options from RAYBESTOS POWERTRAIN — grouped under the catalog's "Steel Plate Pack" designation — the notes column spells out what sets them apart. RAYBESTOS POWERTRAIN STMHONDA42 is listed in this group.
This group includes RAYBESTOS POWERTRAIN RCP96371, RAYBESTOS POWERTRAIN STMHONDA42 and RAYBESTOS POWERTRAIN STMHONDA71.
Drain Plug Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 652530CD | 🇺🇸 US 🇨🇦 CA | 20 MMAluminum | View on Amazon |
This table covers the gaskets that seal the Drain Plug. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
One part is listed for the 2003 Honda Insight — DORMAN 652530CD.
Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR Popular | PT99442 | 🇺🇸 US 🇨🇦 CA | Cartridge Filter | View on Amazon |
| ATP | TF264 | 🇺🇸 US 🇨🇦 CA | OE ReplacementSpin On Filter | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Popular | 0440383 | 🇺🇸 US 🇨🇦 CA | Cartridge Type | View on Amazon |
| ATP | B264 | 🇺🇸 US 🇨🇦 CA | Premium Replacement | View on Amazon |
| ATP | B414 | 🇺🇸 US 🇨🇦 CA | Premium ReplacementSump Filter | View on Amazon |
| BECK/ARNLEY | 0440339 | 🇺🇸 US 🇨🇦 CA | Internal Filter | View on Amazon |
| BECK/ARNLEY | 0440411 | 🇺🇸 US 🇨🇦 CA | Internal Filter | View on Amazon |
| HASTINGS / BALDWIN | TF215 | 🇺🇸 US 🇨🇦 CA | Cartridge Filter | View on Amazon |
| VAICO | V260418 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans. | View on Amazon |
| VAICO | V260430 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the replacement filters for this application — the table heading and notes say which circuit. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for.
10 Filter parts for the 2003 Honda Insight come from 5 brands — ATP, BECK/ARNLEY, VAICO and 2 other brands. The "Popular" part is VARIOUS MFR PT99442.
The Economy section lists 2 options from VARIOUS MFR and ATP — the catalog's value-priced group. VARIOUS MFR PT99442 is listed in this group.
In the Standard Replacement grade, BECK/ARNLEY, ATP, VAICO and 1 other brand supply 8 parts: built to original-equipment specification. A representative part number is BECK/ARNLEY 0440383.
Fluid Cooler O-Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 82562 | 🇺🇸 US 🇨🇦 CA | Oil Cooler O-Ring and Gasket Assortment | View on Amazon |
This table covers the Fluid Cooler O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove.
This group shows a single part: DORMAN 82562.
Fluid Pan Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 090178 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans.Gasket Or Seal Included: YES | View on Amazon |
This table covers the Fluid Pan drain plugs.
One part is listed for the 2003 Honda Insight — DORMAN 090178.
Manual Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA | NS221207 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans. | View on Amazon |
| NATIONAL | 221207 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans.Honda trans. | View on Amazon |
| WJB / INMOTION PARTS | WS221207 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans.Honda trans. | View on Amazon |
This table covers the seals at the Manual Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
3 Manual Shaft Seal parts are listed for the 2003 Honda Insight, from BCA, NATIONAL and WJB / INMOTION PARTS.
This group includes BCA NS221207, NATIONAL 221207 and WJB / INMOTION PARTS WS221207.
Output Shaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA | NS99139 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| NATIONAL | 99139 | 🇺🇸 US 🇨🇦 CA | Fits LeftAutomatic CVT trans. | View on Amazon |
| WJB / INMOTION PARTS | WS99139 | 🇺🇸 US 🇨🇦 CA | Fits LeftAutomatic CVT trans. | View on Amazon |
This table covers the wear sleeves used to restore a Output Shaft seal surface.
3 Output Shaft Repair Sleeve parts for the 2003 Honda Insight come from 3 brands — BCA, NATIONAL and WJB / INMOTION PARTS.
This group includes BCA NS99139, NATIONAL 99139 and WJB / INMOTION PARTS WS99139.
Output Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ATP Popular | HO27 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans.Outer Diameter: 2.1875" | View on Amazon |
| NATIONAL Popular | 710314 | 🇺🇸 US 🇨🇦 CA | LeftAutomatic CVT trans. | View on Amazon |
| BCA | NS710314 | 🇺🇸 US 🇨🇦 CA | LeftAutomatic CVT trans. | View on Amazon |
| BCA | NS223553 | 🇺🇸 US 🇨🇦 CA | RightAutomatic CVT trans. | View on Amazon |
| NATIONAL | 223553 | 🇺🇸 US 🇨🇦 CA | RightAutomatic CVT trans. | View on Amazon |
| SKF | 14018 | 🇺🇸 US 🇨🇦 CA | Right | View on Amazon |
| SKF | 12989 | 🇺🇸 US 🇨🇦 CA | Left | View on Amazon |
| TIMKEN | 223553 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans. | View on Amazon |
| WJB / INMOTION PARTS | WS223553 | 🇺🇸 US 🇨🇦 CA | RightAutomatic CVT trans. | View on Amazon |
| WJB / INMOTION PARTS | WS710314 | 🇺🇸 US 🇨🇦 CA | LeftAutomatic CVT trans. | View on Amazon |
This table covers the seals at the Output Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
10 Output Shaft Seal parts for the 2003 Honda Insight come from 6 brands — NATIONAL, BCA, SKF and 3 other brands. The "Popular" part is ATP HO27.
Shift Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ATP | HO22 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans.Outer Diameter: 0.8125" | View on Amazon |
| PIONEER | 759172 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans. | View on Amazon |
| PIONEER | 759052 | 🇺🇸 US 🇨🇦 CA | Pack Of 2 | View on Amazon |
This table covers the seals at the Shift Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
3 Shift Shaft Seal parts are listed for the 2003 Honda Insight, from PIONEER and ATP.
Part numbers include ATP HO22, PIONEER 759172 and PIONEER 759052.
Torque Converter Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA | NS99076 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans.with MHTA Transmission code | View on Amazon |
| NATIONAL | 99076 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans.Honda trans. | View on Amazon |
| WJB / INMOTION PARTS | WS99076 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans.Honda trans. | View on Amazon |
This table covers the wear sleeves used to restore a Torque Converter seal surface.
3 Torque Converter Repair Sleeve parts are listed for the 2003 Honda Insight, from BCA, NATIONAL and WJB / INMOTION PARTS.
This group includes BCA NS99076, NATIONAL 99076 and WJB / INMOTION PARTS WS99076.
Torque Converter Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ATP | HO16 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans. | View on Amazon |
| NATIONAL | 710805 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans.Honda trans. | View on Amazon |
| TIMKEN | 710315 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans. | View on Amazon |
| WJB / INMOTION PARTS | WS710805 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans.Honda trans. | View on Amazon |
This table covers the seals at the Torque Converter Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
4 Torque Converter Shaft Seal parts are listed for the 2003 Honda Insight, from ATP, NATIONAL, TIMKEN and 1 other brand.
Listed part numbers: ATP HO16, NATIONAL 710805 and TIMKEN 710315, plus the other parts above.
Transmission Fluid
ATF +4
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PENTOSIN | 1058112 | 🇺🇸 US 🇨🇦 CA | ATF441 Liter | View on Amazon |
| PENTOSIN | 1058212 | 🇺🇸 US 🇨🇦 CA | ATF445 Liters | View on Amazon |
CVT
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AISIN | ATFHCV | 🇺🇸 US 🇨🇦 CA | CVT Fluid1 Quart | View on Amazon |
| LUBEGARD | 68112 | 🇺🇸 US 🇨🇦 CA | Complete CVT Fluid32 oz | View on Amazon |
Dexron
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | 109243 | 🇺🇸 US | Container Type: Plastic Container | View on Amazon |
Multi-Vehicle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LIQUI MOLY Popular | 20032 | 🇺🇸 US 🇨🇦 CA | Top Tec ATF 18001 Liter | View on Amazon |
| VALVOLINE Popular | VV3246 | 🇺🇸 US 🇨🇦 CA | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Quart | View on Amazon |
| VALVOLINE Popular | 773775 | 🇺🇸 US 🇨🇦 CA | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Gallon | View on Amazon |
| LIQUI MOLY | 20018 | 🇺🇸 US 🇨🇦 CA | Top Tec ATF 12001 Liter | View on Amazon |
| LIQUI MOLY | 22036 | 🇺🇸 US 🇨🇦 CA | Top Tec ATF 18005 Liter | View on Amazon |
| LIQUI MOLY | 20020 | 🇺🇸 US 🇨🇦 CA | Top Tec ATF 12005 Liter | View on Amazon |
| LIQUI MOLY | 20034 | 🇺🇸 US 🇨🇦 CA | Top TEC ATF 180020 Liter | View on Amazon |
| LIQUI MOLY | 20022 | 🇺🇸 US 🇨🇦 CA | Top Tec ATF 120020 Liter | View on Amazon |
| LUCAS OIL | 10418 | 🇺🇸 US 🇨🇦 CA | FULL SYNTHETIC MULTI-VEHICLE AUTOMATIC TRANSMISSION FLUID1 qt | View on Amazon |
| LUCAS OIL | 18007 | 🇺🇸 US 🇨🇦 CA | Full Synthetic Multi-Vehicle Automatic Transmission Fluid6 Gallon | View on Amazon |
| VALVOLINE | 822389 | 🇺🇸 US 🇨🇦 CA | Import Multi-Vehicle ATF1 Quart | View on Amazon |
| VALVOLINE | 881051 | 🇺🇸 US 🇨🇦 CA | Maxlife Multi-Vehicle Full Synthetic ATF5 Gallon Bay Box | View on Amazon |
This table covers the automatic-transmission fluids specified for this gearbox. Typical signs include harsh or delayed shifts, fluid that smells burnt, or a shudder at light throttle. Use exactly the specification in the notes. Automatic transmissions are unforgiving of the wrong fluid.
17 Transmission Fluid parts for the 2003 Honda Insight come from 7 brands — LIQUI MOLY, VALVOLINE, PENTOSIN and 4 other brands. The "Popular" part is ACDELCO 109243.
The ATF +4 section lists 2 options from PENTOSIN — grouped under the catalog's "ATF +4" designation — the notes column spells out what sets them apart. PENTOSIN 1058112 is listed in this group.
In the CVT grade, AISIN and LUBEGARD supply 2 parts: grouped under the catalog's "CVT" designation — the notes column spells out what sets them apart. A representative part number is AISIN ATFHCV.
The Dexron section lists 1 option from ACDELCO — grouped under the catalog's "Dexron" designation — the notes column spells out what sets them apart. ACDELCO 109243 is listed in this group.
The Multi-Vehicle section lists 12 options from LIQUI MOLY, VALVOLINE and LUCAS OIL — grouped under the catalog's "Multi-Vehicle" designation — the notes column spells out what sets them apart. LIQUI MOLY 20032 is listed in this group.
Transmission Fluid Additive
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LUBEGARD | 67010 | 🇺🇸 US 🇨🇦 CA | Continuously Variable Transmission Recharge & Protect10 oz | View on Amazon |
This table covers the conditioners and additives used with this transmission fluid.
This group shows a single part: LUBEGARD 67010.
Buying Automatic Transmission Parts for a 2003 Honda Insight
On this vehicle, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts.
- Confirm you have the 995cc L3 ELECTRIC/GAS engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Transmission Fluid and Filter .
Frequently Asked Questions
How many automatic transmission parts fit the 2003 Honda Insight?
Our catalog currently lists 61 automatic transmission parts for the 2003 Honda Insight across 14 subcategories and 20 brands, covering the 995cc L3 ELECTRIC/GAS engine. Each part is matched to the engine(s) it fits.
What are the signs of automatic transmission problems on a 2003 Honda Insight?
Common symptoms include delayed or harsh engagement, slipping under load, fluid that smells burnt, or shuddering at light throttle around 40 mph. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2003 Honda Insight was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2003 Honda Insight?
Every part on this page is matched to the 995cc L3 ELECTRIC/GAS engine. Then use exactly the fluid specification in the notes — automatic transmissions are the least forgiving component on the vehicle about fluid choice. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2003 Honda Insight
Automatic Transmission Parts for Other Honda Insight Years
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