Acura Integra Manual Transmission Fill Plug

The Acura Integra manual transmission fill plug is a critical component for maintaining proper transmission fluid levels and ensuring smooth gear operation. Located on the transmission housing, this plug allows for fluid filling and level checking. Below are key sections covering identification, location, maintenance procedures, specifications, and troubleshooting.

1. Identification and Location 2. Tools and Materials Required 3. Fluid Filling Procedure 4. Technical Specifications 5. Maintenance Schedule 6. Common Issues and Solutions 7. Safety Precautions 8. Fluid Type Recommendations 9. Torque Specifications 10. Replacement Parts 11. Troubleshooting Guide

Identification and Location

The fill plug is typically a square-headed or hex-headed bolt located on the side of the transmission case.

Component	Description
Fill Plug Type	Square drive (3/8") or Hex head (17mm)
Location	Driver's side of transmission case, above drain plug
Material	Steel with magnetic tip
Thread Size	M12 x 1.5 or M14 x 1.5 depending on model year
Color	Typically black or silver finish
Purpose	Access point for transmission fluid filling and level checking

Tools and Materials Required

Proper tools ensure safe and effective transmission maintenance.

3/8" drive ratchet or breaker bar
Square drive adapter or 17mm socket
Transmission fluid pump or funnel with extension
Clean rags and shop towels
Drain pan for catching spills
Torque wrench for proper tightening
Thread sealant (if specified)

WARNING! Use correct tools to avoid stripping the fill plug. Never use improper tools that may damage the plug.

Fluid Filling Procedure

Proper fluid filling ensures optimal transmission performance and longevity.

Park vehicle on level surface and engage parking brake
Clean area around fill plug to prevent contamination
Remove fill plug using appropriate tool
Insert fluid pump or funnel into fill hole
Add transmission fluid until it begins to drip from fill hole
Reinstall fill plug and torque to specification
Check for leaks and clean any spilled fluid

CAUTION! Vehicle must be level for accurate fluid level measurement. Overfilling can cause seal damage.

Technical Specifications

Plug Type: Square drive (3/8") or Hex (17mm)
Thread Pitch: M12 x 1.5 or M14 x 1.5
Torque Specification: 30-40 ft-lbs (40-55 Nm)
Fluid Capacity: 2.0-2.5 quarts (1.9-2.4 liters)
Magnetic Feature: Yes, collects metal particles
Material: Carbon steel with corrosion coating
Temperature Rating: -40°F to 300°F (-40°C to 149°C)

Maintenance Schedule

Regular maintenance prevents transmission issues and ensures proper operation.

Maintenance Item	Interval	Procedure
Fluid Level Check	Every 6 months	Remove fill plug, verify fluid at hole level
Fluid Change	Every 30,000 miles	Drain old fluid, refill with new fluid
Plug Inspection	Every fluid change	Check for damage, replace if necessary
Magnet Cleaning	Every fluid change	Clean metal particles from plug magnet

Common Issues and Solutions

Addressing common problems with the fill plug and transmission fluid system.

Stripped Plug: Use extractor tool or replace with new plug
Leaking Plug: Replace crush washer or apply thread sealant
Difficult Removal: Use penetrating oil and proper breaker bar
Cross-threading: Always start threads by hand, never force
Magnetic Buildup: Clean magnet during each fluid change

Tip: Always clean threads before reinstalling plug to prevent cross-threading.

Safety Precautions

Following safety procedures prevents injury and vehicle damage.

Wear safety glasses to protect from fluid splashes
Use jack stands when working under vehicle
Work in well-ventilated area
Allow transmission to cool before servicing
Use proper lifting techniques
Keep ignition sources away from transmission fluid

WARNING! Transmission fluid is slippery and flammable. Clean spills immediately to prevent falls and fire hazards.

Fluid Type Recommendations

Using correct transmission fluid is essential for proper operation.

Model Year	Recommended Fluid	Alternative
1990-1993	Honda MTF	10W-30 motor oil (in emergency)
1994-2001	Honda MTF	GM Synchromesh Fluid
All Years	Genuine Honda MTF	Premium synthetic MTF

Note: Always consult owner's manual for specific fluid requirements.

Torque Specifications

Proper torque ensures secure sealing without damaging threads.

Fill Plug Torque: 30-40 ft-lbs (40-55 Nm)
Drain Plug Torque: 30-40 ft-lbs (40-55 Nm)
Thread Cleaner: Use brake cleaner or thread chaser
Lubrication: Light coat of transmission fluid on threads
Crush Washer: Replace with each removal (if equipped)

Replacement Parts

Genuine and aftermarket replacement options for the fill plug.

Part Type	Part Number	Source
OEM Fill Plug	90341-SB0-000	Acura Dealer
Aftermarket Plug	MPP-17	Auto Parts Store
Crush Washer	90471-PX4-000	Acura Dealer
Magnetic Plug	MAG-M12	Performance Retailer

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
Fluid leaking from plug	Damaged threads or missing washer	Replace plug and/or washer; use thread sealant
Plug won't loosen	Corrosion or over-torqued	Use penetrating oil; proper breaker bar; heat if necessary
Stripped plug	Wrong tool used	Use extractor socket; replace plug
Fluid won't fill	Wrong fluid or cold temperature	Use recommended fluid; warm transmission
Metal on magnet	Normal wear or transmission issues	Clean magnet; inspect if excessive metal

Professional Service: If unable to resolve issues, consult qualified Acura technician.

Parts and Support: Contact local Acura dealer or visit acura.com