Air and Fuel› Fuel Injection Systems and Components - Electronic

Aquamist

HFS4-V3.1 Methanol Injection Kit

$499.99

SKU: PS108917

Special Order
Special Order
Ships in 4–6 weeks
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Aquamist HFS4-V3.1 HFS-4 Methanol Injection Kit is an authentic OEM part designed to enhance performance and efficiency. This methanol injection system is essential for controlling engine temperatures, improving combustion, and increasing overall power output. It directly fits select BMW M5 models and may be compatible with various performance-oriented applications. The HFS4 unit integrates seamlessly into the engine management system, utilizing OEM part number 7845046 for precise fitment. This component is critical in resolving common issues such as overheating or knocking, often encountered in high-performance vehicles. Engineered for durability and reliability, the HFS-4 injection kit delivers consistent performance, ensuring your vehicle maintains its factory specifications.
Show original supplier description
The Aquamist HFS4-V3.1 HFS-4 Methanol Injection Kit is an authentic OEM part designed to enhance the performance and efficiency of compatible vehicles. This system is crucial for managing engine temperatures, optimizing combustion, and boosting overall power output. It is engineered to directly fit select BMW M5 models with the 4.4L V8 Turbo engine and production dates up to 07/2013. The HFS4 unit integrates seamlessly with the engine management system, using OEM part number 7845046 for accurate fitment. This methanol injection system is vital for addressing common high-performance vehicle issues like overheating or engine knocking. Its durable and reliable construction ensures consistent performance, helping your vehicle maintain its factory specifications and extending engine life. Replacing worn components with this certified OEM part guarantees optimal functionality. This part is specifically designed for BMW M5 Sedan models with the 4.4L V8 Turbo engine. It is critical to note that this kit is only for vehicles with a production date up to 07/2013. The system may not fit vehicles produced after this date or other BMW models.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandAquamist
Part NumberPS108917
CategoryAir and Fuel
5,000+ Trusted brands
1M+ Enthusiasts
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(760) 282-4645 hello@motormia.co

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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