Is this just an aesthetic upgrade?

While it definitely enhances engine bay visuals, the billet construction also provides improved durability over time when compared to the OEM plastic cap.

Will it work when the engine is hot?

Yes, the cap performs as normal and carries the same pressure rating as the OEM cap. For added comfort and ease of use in high‑temperature conditions, we recommend using it with the 09D Acetal Key Tool

Does it seal like the OEM cap?

Yes, it seals securely and retains the correctpressure characteristics required for modern coolant systems. The internal pressure mechanism is a plastic moulding as per the OEM cap.

Is it easy to install?

Absolutely, the coolant caps are suppled pregreased and it’s a simple twist‑on replacement for the OEM cap with no modifications required.

What is the installation torque setting?

The suggested torque settings are 115Nm for both the Subframe bolt and for the gearbox side.

Is this part also known as a roll restrictor?

Yes, some tuners and customers also refer to this part as a roll restrictor.

FEN066AA

09D Coolant Cap [Ford Models]

Name: 09D Coolant Cap [Ford Models]
Brand: ZERONINE DESIGN
SKU: FEN066AA
Price: 39.99 GBP
Availability: InStock

£39.99 GBP

Product Overview

Compatible with a wide range of Ford models including: Mk7/8 Fiesta ST, Puma ST, Mk3/4 Focus ST, Mk3 Focus RS and Ranger, the billet coolant cap is packed with 09Design touches as you might expect, from the knurled body, to the intricate top section… but there’s much more to this cap than meets the eye.

Designed and manufactured in the UK from CNC-machined aerospace-grade billet aluminium, with an optional temperature stable key-operated opening and closing system, adding a new layer of functionality and convenience...

KEY FEATURES AND ADVANTAGES

Crafted in‑house from T6082 aluminium for precision, durability, and a premium finish.
Corrosion resistant and visually striking thanks to an anodised gloss black finish, giving a high‑end engine bay accent.
Functional knurling around the cap body improves grip, even with gloves or oily hands.
Subtle, crisp branding that matches the rest of your 09D engine bay accessories.
Use with the optional 09D Acetal Key Tool (available to purchase separately here) for easier opening when hot, protecting your hands and enhancing convenience.
Designed to match our oil filler and brake fluid caps for a clean, cohesive look.

Crafted in‑house from T6082 aluminium for precision, durability, and a premium finish.
Corrosion resistant and visually striking thanks to an anodised gloss black finish, giving a high‑end engine bay accent.
Functional knurling around the cap body improves grip, even with gloves or oily hands.
Subtle, crisp branding that matches the rest of your 09D engine bay accessories.
Use with the optional 09D Acetal Key Tool (available to purchase separately here) for easier opening when hot, protecting your hands and enhancing convenience.
Designed to match our oil filler and brake fluid caps for a clean, cohesive look.

TECHNICAL DATA

Material: Billet T6‑6082 aluminium
Finish: Gloss black anodised
Branding: Laser‑etched 09D logo
Grip Detail: Precision diamond knurl for positive handling

Material: Billet T6‑6082 aluminium
Finish: Gloss black anodised
Branding: Laser‑etched 09D logo
Grip Detail: Precision diamond knurl for positive handling

FITMENT

The 09D Coolant Cap is designed to fit a wide range of Ford vehicles, including:

Fiesta ST Mk7 & Mk8/Mk8.5
Puma ST 1.5 EcoBoost
Focus ST Mk3 / ST Mk4 & Mk4.5
Focus RS Mk3
Ford Kuga 1.5 EcoBoost

NOTE: Always double‑check fitment against your model year and application, this cap replaces the standard coolant expansion tank cap across these platforms. If in doubt then please contact us prior to ordering.

The 09D Coolant Cap is designed to fit a wide range of Ford vehicles, including:

Fiesta ST Mk7 & Mk8/Mk8.5
Puma ST 1.5 EcoBoost
Focus ST Mk3 / ST Mk4 & Mk4.5
Focus RS Mk3
Ford Kuga 1.5 EcoBoost

NOTE: Always double‑check fitment against your model year and application, this cap replaces the standard coolant expansion tank cap across these platforms. If in doubt then please contact us prior to ordering.

Frequently Asked Questions (FAQs)

: While it definitely enhances engine bay visuals, the billet construction also provides improved durability over time when compared to the OEM plastic cap.
: Yes, the cap performs as normal and carries the same pressure rating as the OEM cap. For added comfort and ease of use in high‑temperature conditions, we recommend using it with the 09D Acetal Key Tool
: Yes, it seals securely and retains the correct
pressure characteristics required for modern coolant systems. The internal pressure mechanism is a plastic moulding as per the OEM cap.
: Absolutely, the coolant caps are suppled pre
greased and it’s a simple twist‑on replacement for the OEM cap with no modifications required.
: The suggested torque settings are 115Nm for both the Subframe bolt and for the gearbox side.
: Yes, some tuners and customers also refer to this part as a roll restrictor.

SHIPPING & RETURNS

Orders are shipped Monday to Friday, with weekend orders dispatched on Monday. Shipping is handled via FedEx or DHL with full tracking provided.

UK delivery: Typically next working day.

International delivery: Usually 2–5 working days, depending on location.

Under UK consumer law, unused items can be returned within 14 days of receipt for a refund, provided they are in original condition and packaging. Return shipping costs are the customer's responsibility unless the item is faulty or incorrect. Contact the team prior to sending any returns.

Orders are shipped Monday to Friday, with weekend orders dispatched on Monday. Shipping is handled via FedEx or DHL with full tracking provided.

UK delivery: Typically next working day.

International delivery: Usually 2–5 working days, depending on location.

Under UK consumer law, unused items can be returned within 14 days of receipt for a refund, provided they are in original condition and packaging. Return shipping costs are the customer's responsibility unless the item is faulty or incorrect. Contact the team prior to sending any returns.

WARRANTY

All products are covered by a 12-month warranty against manufacturing defects. This does not cover normal wear and tear, misuse, or damage during installation. For warranty claims, contact support with your order details.