Fitment Guarantee - We'll verify your order before it ships.

A4LD 1988-1991 Ford Aerostar 3.0L RWD – Remanufactured Automatic Trans

Fitment Guarantee - We'll verify your order before it ships.

  • A4LD 4-Speed Automatic Transmission
  • Fully Remanufactured to Meet or Exceed OE Specifications
  • Available 7 Year, Million Mile Warranty and Free Core Return Shipping

Out of stock

SKU: 11090T Categories: ,

Description

Every remanufactured transmission we sell is backed by a Million Mile warranty up to 7 years, the best in the industry. The reason we can offer this warranty? Every transmission undergoes the same rigorous remanufacturing process:

  1. Teardown and Triple Clean – Every transmission is disassembled, inspected, and cleaned three times. We also chase all threads and install all new bushings during this process.
  2. Valve Body Rebuild and Test – Our most experienced team members rebuild and inspect each valve body before testing it using our C.A.R.S. testing system, which simulates real-world use and validates the valve body.
  3. New O-Rings, Gaskets, and Seals – Once the valve body is tested, the transmission is reassembled with all new o-rings, gaskets, and seals.
  4. Dyno Testing – Our custom dyno testing machines spin and load test every transmission to verify it’s ready for the road.

When you buy a remanufactured transmission from Powertrain Products, you’re buying a transmission that meets or exceeds OEM specifications. And we back that claim up with our available 7 Year, 1 Million Mile Warranty.

Prop 65 WarningWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Transmission Specs

OEM Assembly Numbers/Tags

88GT-LAA, 88GT-LAB, 88GT-MAA, 88GT-MAB, 89GT-EAA, 89GT-GAA, 89GT-TAA, 89GT-TAB, 89GT-TBB, 90GT-RAA, 90GT-RBA, 90GT-SAA, 90GT-SBA, 91GT-AEA, 91GT-AEB, 91GT-AEC, 91GT-AED, E89Z-LARM, E8GZ-MRM, E99Z-EARM, E99Z-GRM, F09Z-SARM, F19Z-AERM, F19Z-ARM

Transmission Specifications

Product Attributes

    See What Vehicles This Transmission Will Fit

    Vehicle Fitment

      HERE'S HOW WE MAKE THE A4LD BETTER:

      Corrected Valve Body and Boost Valve

      The A4LD is known to suffer from low line pressure caused by a worn boost valve sleeve. We install an improved, oversized boost valve and sleeve to keep pressures consistent and give you crisp shifts.

      Ford A4LD Remanufactured 4-Speed Automatic Transmission
      Ford A4LD Remanufactured 4-Speed Automatic Transmission

      Premium Sprags

      An updated overdrive sprag is installed to guarantee strong holding capacity and prevent 4th gear failure issues common to the A4LD.

      Additional Clutch Plates

      To fix the weak factory clutch engagement, we upgrade the forward and direct drums with additional friction plates, eliminating the common 3-4 slip under load.

      Ford A4LD Remanufactured 4-Speed Automatic Transmission
      Ford A4LD Remanufactured 4-Speed Automatic Transmission

      Servo and Piston Upgrades

      To address servo bore pressure leaks, we upgrade to intermediate and overdrive servos with molded rubber seals to ensure max holding capacity, eliminate lip seal separation and prevent 2-3 shift flare.

      Enhanced Torque Converter and Pump

      Our fully remanufactured torque converter is tested for leaks, lock-up, concentricity, and balance to correct the lock-up shudder issues caused by weak internal OE welds. We precision-machine pump mating surfaces and install 100% new, custom-spec bushings for perfect alignment and reduced friction.

      THE POWERTRAIN PRODUCTS DIFFERENCE

      Powertrain Products Other Powertrain Companies
      High-Quality Parts
      We Use New Parts To Rebuild Our Transmissions
      Warranty Protection
      Available 7 Year, 1 Million Mile Warranty
      No Pricing Tricks
      No Surprise Fees, No Mystery Charges
      Every Unit is Rigorously Tested
      Every Transmission Meets Or Exceeds OEM Specs

      HERE'S WHY OUR TRANSMISSIONS LEAD THE INDUSTRY

      Every transmission we touch gets the same treatment:

      Teardown and Triple Clean – Every transmission is disassembled, inspected, and cleaned three times. We also chase all threads and install all new bushings during this process.

      Valve Body Rebuild and Test – Our most experienced team members rebuild and inspect each valve body before testing it using our C.A.R.S. testing system, which simulates real-world use and validates the valve body.

      New O-Rings, Gaskets, and Seals – Once the valve body is tested, the transmission is reassembled with all new o-rings, gaskets, and seals.

      Dyno Testing – Our custom dyno testing machines spin and load test every transmission to verify it’s ready for the road.

      6l80e4-1-Square

      OUR REVIEWS

      QUICK, CONVENIENT FINANCING OPTIONS

      Up To 60 Months Financing Available *

      All financing offers can provide an instant response!

      *Upon approved credit. Interest rates vary.

      PPI- Payment Method- Row
      3
      PPI- Payment Options
      PPI- Avvance

      Up To 60 Months Financing Available *

      All financing offers can provide an instant response!

      *Upon approved credit. Interest rates vary.

      PPI- Pymnt Methods Stacked (200 x 200 px)

      Transmission FAQ:

      New, Used, Rebuilt or Remanufactured Transmissions - What's The Difference?
      How can I be sure the transmission I order will fit my vehicle?
      What Is A Transmission Tag Number?
      Do Remanufactured Transmissions Come With A Warranty?
      Does A Remanufactured Transmission Need A Break-In Period?
      What is a core charge?
      Are there shipping charges?
      What are shipping times?
      How long does it take for a transmission to arrive at my door?
      Do you ship outside the United States?
      Do you offer express/expedited shipping?
      What payment methods do you accept?

      7 YEAR, MILLION MILE WARRANTY AVAILABLE

      Our industry leading guarantee gives you peace of mind!

      FREE CORE RETURN
      FEE WAIVER

      Return your core within 15 days and never pay a core fee.

      EXPERT SUPPORT & SERVICE

      We know powertrains like no one else, give us a call or drop an email.