PFA Aston Martin Lower Arm Bush Preload Shim Classic Models DB4 Onwards

Aston Martin Lower Arm Bush Preload Shim (DB4 Onwards in Stainless Steel)

Fine-tune your front suspension geometry and eliminate unwanted play using the PFA Lower Arm Bush Preload Shim. We manufacture this specialized component from high-grade stainless steel, providing a permanent, corrosion-resistant upgrade over original factory hardware to stand the test of time.

Product Overview

Originally introduced as a later factory update during the V8 era, this shim is frequently required on both V8 models and earlier cars to correctly set and increase the lower arm front bush preload. By placing this shim between the front bush and the lower arm front bush securing plate, you ensure proper tension and eliminate axial movement in the control arm assembly.

• Vehicle Compatibility: Suitable for classic Aston Martin models from the DB4 era onwards, including:

  • Aston Martin DB4, DB5, DB6 & DB6 Mk2

  • Aston Martin DBS6 & DBSV8

  • Classic Aston Martin AM Vantage & AMV8

• Quantity: This listing is for a single item (sold individually as required for fine-adjustment).

• Quality: Precision-cut from high-grade stainless steel to prevent rust, swelling, and thickness degradation under heavy suspension loads.

Technical Specifications

Parts Book Reference Guide

You can easily cross-reference this component in your official Aston Martin parts catalogues and workshop manuals:

• Model: Aston Martin AM V8 (and adaptable for earlier DB-series models)

• Parts Catalogue / Publication: TP 5078-I-0890-150 (AML147L)

• Page: 4.2.1

• Item Number: 12

Why Choose Our Stainless Steel Preload Shim?

Maintaining strict tolerances in the front suspension is vital for the precise handling and road manners expected of a classic Aston Martin. Standard steel shims are prone to corrosion and thinning in exposed areas, which can lead to loose bush preload and vague steering response. Consequently, upgrading to our stainless steel shim ensures permanent dimensional stability, effortless future servicing, and precise alignment control.

Need assistance with your front suspension rebuild? We specialize in supplying authentic and precision-engineered components for classic Aston Martin models. If you need help verifying your suspension setup or calculating required shim pack clearances, please contact our team for expert guidance.