ASTON MARTIN VANQUISH S AM29 V12 Transmission FD33-70041-AB 8-speed automatic

part number FD33-70041-AB identifies the ZF 8HP70 Touchtronic III 8-speed automatic transaxle specifically calibrated for the Aston Martin Vanquish S (and late-model Vanquish) featuring the AM29 V12 engine.

This transmission was the definitive upgrade for the Vanquish, replacing the 6-speed unit in late 2014 and becoming standard for the Vanquish S.

1. Technical Specifications

• Manufacturer: ZF Friedrichshafen.

• Type: 8-speed torque-converter automatic, rear-mounted transaxle.

   

• Shifting: Capable of gear changes in 130 milliseconds.

• The AM29 Match: This transmission was engineered to handle the increased output of the AM29 V12 (592+ hp / 630 Nm). The gear ratios were specifically chosen to take advantage of the V12’s torque curve, allowing for a 201+ mph top speed and a 3.5-second 0–60 mph time.

2. Why the “FD33” Prefix Matters

While the ZF 8-speed is used in many luxury cars (BMW, Rolls-Royce, etc.), the FD33-70041-AB is highly specific:

• The Casing: It is a transaxle design, meaning the gearbox and differential are in one unit at the rear of the car.

• Software (TCU): It features the “S” specific shifting logic, which is more aggressive in Sport+ mode than the standard Vanquish or Rapide units.

• Torque Tube Interface: It is designed to bolt directly to the Gen-4 VH magnesium torque tube.

3. Common Maintenance & Symptoms

By 2026, many of these units are reaching the age where “lifetime” fluid should be replaced.

• Fluid Service: Use only ZF Lifeguard 8 fluid. A service kit (pan/filter + fluid) is relatively affordable ($350) compared to a gearbox failure.

• The “Hanging” Shift: If the transmission feels like it’s “hanging” in gear or shifting harshly when cold, it often requires a TCU software re-learn or an adaptation drive using the Aston Martin Diagnostic System (AMDS).

4. Pricing & Availability (2026 Estimates)

The FD33 is a premium part and is rarely found “sitting on a shelf” outside of specialized Aston Martin dismantlers.

Installation Requirement: VIN Coding

If you source a used or new unit, the Transmission Control Module (TCM) is “VIN-locked.” You cannot simply bolt it in and drive. A technician must use the AMDS tool to pair the gearbox to the car’s Engine Control Modules (ECMs) and the Immobilizer system.