The crush washer for Acura manual transmission is a critical sealing component designed specifically for transmission drain plugs in Acura vehicles with manual transmissions. These washers provide a leak-proof seal between the drain plug and transmission housing, preventing fluid leaks and ensuring proper transmission operation. Below are key sections covering specifications, installation procedures, compatibility, maintenance, and troubleshooting.
Key components: Aluminum crush washer, copper crush washer, OEM specifications, proper sealing surface.
| Feature | Description |
|---|---|
| Material | Aluminum or copper construction for optimal sealing |
| Diameter | Standard 18mm or 20mm sizes for Acura transmissions |
| Thickness | 1.5mm to 2.0mm depending on application |
| Temperature Range | -40°F to 300°F (-40°C to 149°C) |
| Pressure Rating | Withstands transmission fluid pressure up to 50 PSI |
| Color | Silver (aluminum) or copper (copper) |
| Reusability | Single-use only - must be replaced at each service |
| OEM Part Number | 90471-PX4-000 (common Acura transmission washer) |
| Compatibility | Designed specifically for manual transmission drain plugs |
| Sealing Method | Crush deformation creates perfect seal |
Proper installation ensures leak-free operation and transmission protection.
WARNING! Always replace crush washer during fluid changes. Reusing old washers can cause leaks.
Acura crush washers are model-specific. Verify compatibility before installation.
CAUTION! Verify part number and size match your specific Acura model.
Crush washer replacement should occur during regular transmission maintenance.
Replacement Intervals:
Inspection: Check for washer deformation and proper sealing during oil changes.
Proper torque is critical for crush washer performance and leak prevention.
| Transmission Model | Torque Specification | Notes |
|---|---|---|
| Most Acura Manual Transmissions | 36-40 ft-lbs (49-54 Nm) | Standard specification |
| Acura Integra B-series | 33-36 ft-lbs (45-49 Nm) | B16, B18 transmissions |
| Acura RSX K-series | 36-40 ft-lbs (49-54 Nm) | K20A2, K20A3 |
| Acura TSX 4-cylinder | 36-40 ft-lbs (49-54 Nm) | All manual models |
| Acura TL 3.2L | 36-40 ft-lbs (49-54 Nm) | Manual transmission only |
IMPORTANT: Use torque wrench for accurate tightening.
Use only recommended transmission fluids with proper crush washer installation.
Capacity: Typically 2.0-2.5 quarts for complete refill after washer replacement.
Tip: Always use fresh transmission fluid when replacing crush washer.
Always follow safety procedures when working with transmission components.
WARNING! Transmission fluid is slippery - clean spills immediately.
Understanding common problems helps prevent transmission damage.
| Issue | Cause | Prevention |
|---|---|---|
| Fluid leaks | Reused crush washer | Always use new washer |
| Stripped threads | Over-torquing drain plug | Use torque wrench |
| Washer doesn't seal | Wrong size or material | Verify correct part number |
| Difficult removal | Washer fused to plug | Replace at every service |
| Transmission noise | Low fluid from leak | Check for leaks after service |
Genuine Acura crush washers come with manufacturer warranty against defects.
Coverage: 12-month limited warranty against manufacturing defects. Does not cover improper installation, over-torquing, or reuse. Keep receipt for warranty claims. For genuine parts, purchase from authorized Acura dealers.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Transmission fluid leak | Damaged or missing crush washer | Replace with new crush washer immediately |
| Drain plug hard to remove | Over-torqued or corroded | Use proper tools; clean threads before reinstalling |
| Washer doesn't crush properly | Wrong material or size | Verify correct OEM part number |
| Fluid seepage around plug | Insufficient torque | Retorque to specification with new washer |
| Transmission shifting issues | Low fluid level from leak | Check fluid level, repair leak, refill |
Professional Service: If leaks persist after washer replacement, consult Acura dealership.
Support: Contact Acura customer service at 1-800-382-2238 or visit acura.com