Brand New Automatic Transmission Filter Kit 31728AA141 for Subaru TR690 Gearbox with OEM Standard Gasket

This is a brand-new automatic transmission filter kit, OE part number 31728AA141 (also compatible with 31728-AA121/AA120), designed for the TR690 automatic transmission. It is compatible with Subaru, Toyota and other vehicles equipped with this transmission model.

The transmission filter is a critical maintenance component that cleans the transmission fluid, removes debris, and protects internal gears, clutches, and valve bodies from contamination. This new filter kit ensures smooth fluid flow and extends the service life of the transmission.

Brand-New & OEM-Quality Construction

• 100% new production with high-grade filter media and durable housing
• Meets or exceeds OEM specifications for filtration efficiency and fluid flow rate
• Precision-molded housing ensures a tight seal and leak-free installation

Perfect Fit & Compatibility

• Direct fit for TR690 automatic transmissions
• Matches original OE numbers 31728AA141 / 31728-AA121 / 31728-AA120 for accurate installation
• Compatible with Subaru, Toyota and other applicable models

Eliminates Common Transmission Issues

• Removes metal particles, sludge, and debris from transmission fluid
• Prevents valve body clogging, shifting issues, and premature component wear
• Maintains optimal fluid flow and pressure for smooth operation

Cost-Effective & Fast Support

• Affordable high-quality filter kit replacement
• Competitive pricing for retail and bulk orders
• Fast delivery within 1-5 working days via global express shipping

1. Material & Filtration Testing: Filter media is tested for efficiency, dirt-holding capacity, and fluid flow rate.
2. Fit & Seal Testing: The housing and sealing gasket are inspected for dimensional accuracy and leak resistance.
3. Durability Testing: The filter is tested under high pressure and temperature to ensure it withstands harsh operating conditions.
4. Final Quality Control: Visual and functional inspection before packaging to ensure defect-free delivery.

• Professional Installation Recommended: Requires certified technicians for removal and installation.
• Fluid Change Required: Always replace the transmission filter during a fluid change to ensure optimal performance.
• Gasket Replacement: Always use the included new gasket to prevent leaks at the filter housing.

• Packaging: The filter kit is carefully packed in neutral export packaging to prevent damage during transit.
• Shipping: We support worldwide shipping via DHL, UPS, EMS, FedEx, TNT and ocean freight.
• Lead Time: In-stock units are shipped within 1-5 working days after payment confirmation.

Guangzhou Meishun Automatic Transmission Co., Ltd. is a verified supplier specializing in automatic transmission parts. We offer a full range of AT/CVT/DCT components including filters, valve bodies, torque converters, and overhaul kits for various brands. We serve customers worldwide with reliable products and competitive prices.

Q1: Which vehicles does this filter kit fit?
A1: It fits vehicles equipped with the TR690 automatic transmission, including applicable Subaru and Toyota models. Please confirm your transmission model before ordering.

Q2: Is this a new or used part?
A2: This is a brand-new filter kit, manufactured to OEM standards and fully tested before shipment.

Q3: What issues can this filter resolve?
A3: It prevents fluid contamination, valve body clogging, shifting issues, and premature wear caused by dirty transmission fluid.

Q4: Do you offer bulk pricing for repair shops?
A4: Yes, we offer discounted pricing for bulk orders and long-term cooperative partners such as transmission repair shops and auto parts wholesalers. Please contact us for a custom quote.