Subaru TR580 Transmission for Sale | OEM Used Subaru TR580 High-Torque

Description

About the Subaru TR580 CVT Continuously Variable Transmission

Looking for a replacement Subaru TR580 transmission? Part Nests stocks OEM used Subaru TR580 high-torque CVT continuously variable transmissions. The TR580 is Subaru’s high-torque CVT designed for use with higher-output Subaru engines including the FA20DIT (per our listing), the FB25 (per our listing) in some pairings, and the Ascent FB24T turbo. The TR580 represents Subaru’s modern continuously variable transmission engineering, replacing traditional automatic transmissions in many Subaru applications and providing seamless ratio changes for efficiency and smooth power delivery.

Transmission Overview: TR580 Architecture

• Type: Continuously variable transmission (CVT) with Subaru-specific Lineartronic design
• Variant: TR580 is the high-torque variant of the Lineartronic CVT family (other variants include TR690 for higher-displacement applications)
• Drive type: Steel push-belt (Bosch-supplied) with thrust elements; chain variants exist in some Lineartronic generations
• Configuration: Compatible with Subaru AWD (symmetrical all-wheel drive) standard across applications
• Manual mode: Paddle-shift simulated stepped ratios in performance applications (WRX CVT)
• Hydraulic control: Hydraulic clamping force varies belt position on input and output pulleys to change effective ratio
• Pulleys: Variable-diameter primary (input) and secondary (output) pulleys with hydraulic actuation
• Lockup torque converter: Standard for direct drive at cruise (efficiency improvement)
• TCU (Transmission Control Unit): Electronic control for ratio scheduling, lockup engagement, and adaptive learning
• Differential: Integrated AWD differential with symmetrical AWD output

TR580 vs Other Subaru CVT Variants

The TR580 (this listing) is one of several Subaru Lineartronic CVT variants:

• TR580 (this listing): High-torque CVT designed for turbo Subaru applications (FA20DIT, FB24T, etc.); higher hydraulic clamping force capability
• TR690: Higher-displacement Lineartronic variant for Outback / Legacy 3.6L H6 (EZ36) and Ascent 2.4T applications; not interchangeable with TR580
• Earlier Lineartronic variants: Earlier-generation Lineartronic CVTs preceded the TR580 / TR690 designations
• Stepped automatic alternatives: Some Subaru applications still offered traditional stepped automatic transmissions; the TR580 represents the CVT alternative
• Manual transmission alternatives: The WRX 6-speed manual transmission is the manual alternative to TR580 CVT in WRX applications

TR580 Applications

• Subaru WRX (US market 2015 plus, VA generation, CVT trim): WRX customers who chose CVT vs 6-speed manual received TR580 paired with FA20DIT
• Subaru Forester XT (US market 2014-2018): Forester XT turbo application paired TR580 CVT with FA20DIT
• Subaru Outback XT (some years and markets): Outback XT turbo applications used TR580 with FA20DIT
• Subaru Legacy GT (some years and markets): Legacy GT turbo applications
• Subaru Ascent FB24T (2019 plus): Ascent uses TR580 with the FB24T turbo (the 2.4L FB-family turbo variant)
• Subaru FB25 NA applications (some pairings): Some FB25-equipped Subaru models pair with TR580 (other FB25 applications use TR690 or earlier CVT variants depending on year and specific application)

CVT Operation Philosophy vs Traditional Automatic

The TR580 (this listing) operates fundamentally differently from a traditional stepped automatic transmission:

• Continuously variable ratio: The TR580 provides infinite ratios between minimum and maximum belt positions; no discrete “gears” exist mechanically
• Optimal engine RPM hold: CVT can hold engine at optimal RPM during acceleration and adjust ratio; traditional automatic shifts between fixed gears
• Simulated stepped ratios (manual mode): Performance CVT applications including the WRX simulate stepped ratios via TCU programming for manual paddle-shift mode
• Efficiency benefit: CVT keeps engine at most efficient RPM more of the time; better fuel economy than traditional automatic in steady-state cruise
• Performance handling: The TR580 CVT in WRX VA generation is calibrated for performance with aggressive ratio response; not the “rubber band” feel of older CVTs
• AWD integration: Subaru CVT integrates AWD distribution; symmetrical AWD is standard with the TR580 in primary applications

Engine Pairing Context

The TR580 (this listing) is the transmission designed to pair with several modern Subaru engines, particularly:

• Subaru FA20DIT: Primary turbo engine pairing for TR580 in WRX / Forester XT / Outback XT applications
• Subaru FB25: Some FB25 applications pair with TR580; other FB25 applications use TR690 or earlier CVT variants depending on year and specific application
• Subaru FB24T (Ascent turbo, not specifically covered in our catalog but FB family from context): Ascent FB24T pairs with TR580
• NOT for older EJ255 / EJ257 applications: The TR580 is the modern CVT; older Subaru WRX (2006-2014) and STI (2004-2021) used different transmissions (5-speed manual, 6-speed manual STI, or earlier 5EAT automatic for some WRX configurations)
• STI continues with 6-speed manual: The Subaru WRX STI continued with 6-speed manual transmission only through 2021; STI did NOT transition to CVT

Common TR580 Failure Modes

• CVT fluid degradation: CVT fluid must be specific Subaru-approved CVT fluid; using incorrect fluid causes severe internal wear; CVT fluid service intervals are critical
• Belt wear: Steel push-belt can wear at very high mileage or under aftermarket high-power applications
• Valve body failure: Hydraulic valve body controls ratio changes; valve body failure causes shifting irregularities
• TCU programming issues: Transmission control unit can develop adaptive learning issues; reset / relearn procedure required after fluid service
• Hydraulic pressure issues: Internal pump wear can cause low hydraulic pressure and slipping
• Heat sensitivity: CVT generates heat; cooling system condition affects CVT longevity
• Aftermarket high-power applications: TR580 has limits for aftermarket-tuned high-power FA20DIT applications; serious power-adder builds typically convert to manual transmission

Subaru Modern Powertrain Context

The Subaru TR580 (this listing) is the high-torque CVT for modern Subaru turbo applications. For engine pairing context across our catalog and prior batches, the Subaru FA20DIT engine (our listing) is the primary turbo engine pairing for TR580. The Subaru FB25 engine (our listing) is the modern FB family 2.5L NA engine that pairs with various transmissions including TR580 in some applications. The Subaru WRX engines (our listing) covers the WRX engine family that pairs with TR580 in CVT-equipped trims. The Subaru EJ255 engine (our listing) is the EJ family turbo engine that used different transmissions before FA20DIT / TR580 transition in 2015. The Subaru EJ257 engine (our listing) is the STI Turbo engine that continued with 6-speed manual through 2021 (STI never used CVT). The TR580 represents Subaru’s modern CVT engineering for high-torque turbo applications and continues to be used in modern Subaru applications.

Vehicle Compatibility

TR580 Architecture and Engine Pairing Specifications

CVT Variant Comparison Reference

Common Failure Modes and Maintenance Reference

Why Buy From Part Nests

• Transmission verified as TR580 (Subaru’s high-torque CVT continuously variable transmission for high-output applications)
• Year confirmed (TR580 production approximately 2014 plus across primary Subaru applications)
• Application confirmed (Subaru WRX 2015 plus VA generation CVT trim, Forester XT, Outback XT, Legacy GT, Ascent FB24T applications)
• Torque capacity documented (TR580 is the higher-torque variant designed for turbo Subaru applications)
• Hydraulic system tested (CVT fluid pressure, valve body operation)
• Belt or chain condition documented (TR580 uses steel push-belt with thrust elements)
• TCU (transmission control unit) communication verified
• Differential (AWD output) condition documented
• Free shipping to all 50 states via heavy freight
• 15 day replacement warranty on internal defects
• Subaru-experienced support team familiar with TR580 / TR690 CVT distinctions and modern Subaru powertrain applications
• Call (855) 634-4447 to talk through your application and confirm fit.