PFA Brake Light Switch Hydraulic Classic Models OE Type Replacement
Product Info
PFA Brake Light Switch Hydraulic Classic Models OE Type Replacement
Aston Martin Classic Hydraulic Brake Light Switch (OE Type Replacement)
Ensure reliable brake light activation and safety on your classic grand tourer using the PFA Hydraulic Brake Light Switch. We engineer this exact OE-type replacement—complete with the correct copper sealing washer—to restore precise pressure-actuated switching, ensuring your brake lamps illuminate instantly upon pedal application.
Product Overview
Classic hydraulic brake switches frequently suffer from internal contact failure or fluid leakage over decades of service. Therefore, our precision-manufactured replacement provides a dependable electrical connection, effectively modernizes early screw-terminal setups, and includes the proper sealing hardware right out of the box.
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Vehicle Compatibility: Highly versatile and compatible across an extensive range of classic models, including:
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Aston Martin DB4 (seamlessly replaces the NLA screw-terminal type)
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Aston Martin DB5
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Aston Martin DB6 & DB6 Mk2
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Aston Martin DBS6
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Aston Martin DBS V8
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Classic Aston Martin AMV8
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Quantity: This listing is for a single item (sold individually, supplied with correct copper washer).
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Quality: Manufactured to strict OE pressure thresholds for immediate, reliable contact closure and long-term weather resistance.
Technical Specifications
| Attribute | Detail |
| Part Type | Hydraulic Brake Light Switch (includes copper washer) |
| Manufacturing | OE-Type Precision Replacement |
| Original Part Numbers | 48-37-151 & 20-37-151 (replaces NLA DB4 screw terminal type) |
| Our Part Number | PFA-48-37-151-R |
| Package Quantity | 1 Switch & 1 Copper Sealing Washer |
Parts Book Reference Guide
You can easily cross-reference this component in your official Aston Martin parts catalogues and workshop manuals:
| Model | Parts Catalogue / Section | Page | Item Number |
| DB4 | Plate Y | Page 86 | Item 25 |
| DB5 | IGA112 | Page 6-9 | Item 28 |
| DB6 & DB6 Mk2 | Section 6 | Page 6-13 | Item 19 |
| DBS6 | DF890 | Page 6-17 | Item 20 |
| DBS V8 | DF8801/4/71 (DBS V8) | Page 6-14 | Item 20 |
| AMV8 | AM11521/1L (TP5-78/I/1090-156) | Page 5.1A.2 | Item 51 |
Why Choose Our Hydraulic Brake Light Switch?
Maintaining proper brake signal operation remains critical for road safety, especially when driving classic cars in modern traffic. Old switches often stick, fail internally, or leak brake fluid past the threads. Consequently, upgrading to our reliable replacement switch—supplied complete with the correct copper washer for a leak-free seal—guarantees immediate illumination and a straightforward fit across your DB series or V8 model.
Need assistance with your electrical or braking system restoration? We specialize in supplying authentic and precision-engineered components for classic Aston Martin models. If you need help verifying your application or cross-referencing parts for your restoration, please contact our team for expert guidance.
Parts For Astons is an independent business dedicated to providing high-quality parts primarily for Aston Martin vehicles. Our expertise stems from years of passion and experience with Aston Martins from restoration and race preparation (and everything inbetween), ensuring every part we offer meets the exacting standards of these iconic vehicles.
We manufacture our own parts using our own designs which are developed in-house and rigorously tested before going to market. This enables us to manage our own quality control to ensure you receive a part which is 100% fit for purpose. If we do not have a part in stock, we can manufacture it quickly.
Closely associated with Goldsmith And Young, you can trust in our commitment to quality and personalised service for your restoration or performance needs. Should you have any questions, please do not hesitate to reach out and ask.
Additional information
| OEM | 20-37-151 |
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