Dorch DS25 HPFP Upgrade - BMW B58 GEN1

QT Parts is a Finnish online store.

Our warehouse is located in Nokia, Finland.

You can collect your order directly from us if needed. Simply select “Pickup” at checkout.

Pay securely with multiple payment methods, including invoice and installment plans through Klarna.

The delivery time for products in stock is 1-5 business days. We ship worldwide.

If the product is not in stock and it is a pre order product, the average delivery time is 5-21 business days. If the product has a longer delivery time than previously announced, we will be in touch. International orders may be subject to VAT, import duties, and customs fees upon arrival in the destination country.

Terms for product returns:

• You must return the ordered products within 14 days of receiving
• The products must be unused and without damages
• Commission fee for handling returns is 21,90€
• For product returns, the customer is in charge of the return costs. Only door to door service (Express)
• Shipping costs are not refunded

For international orders sales are final and non-refundable. Once an order is placed, it cannot be canceled or returned. By placing an order, you acknowledge and agree to these terms.

Return address: QT Parts, Vasarakatu 8B, 37150 Nokia, Finland.

Pre order / made-to-order products

If the product you have ordered is a pre order or made-to-order item, it is not subject to the 14-day right of withdrawal or return under consumer protection laws, as the product is manufactured or sourced specifically based on the customer’s individual order.

If you wish to cancel your order before receiving the product, we will refund 50% of the total order amount.

This condition applies to the following product categories:

• Suspension
• Engine Tuning
• Engine Parts
• Exhaust Systems
• Fueling
• Turbochargers/superchargers
• Drivetrain
• ECE-approved Downpipes

All of the above products are manufactured or sourced individually based on the customer’s order, and therefore cannot be returned after delivery, unless the product has a manufacturing or material defect.

In the event of such a defect, the standard liability for defects as provided by consumer protection legislation shall apply.

Dorch DS25 HPFP Upgrade | BMW B58 GEN1

Dorch Engineering continues its pioneering work on direct injection for B58 engines by introducing the next generation high-pressure fuel pump. The DS25 replaces the previous popular "Dorch Stage 2" (DS2) model and elevates performance to a new level. This is a completely redesigned Stage 2.5 pump, offering the best flow capacity and reliability on the market for B58 GEN1 engines.

Technical Specifications (DS25-250)

• Maximum Flow (Gasoline):
  • up to 750 whp
  • up to 1000 whp (+40% camshaft upgrade)
• Maximum Flow (E85):
  • up to 550 whp
  • up to 770 whp (+40% camshaft upgrade)
• Operating Pressure: up to 250 bar

Key Features

• Completely Redesigned: Optimized pressure chamber, spring, plunger travel, and volumetric efficiency
• Top-Tier Flow: The highest flowing B58 HPFP on the market – now even more powerful
• 250 Bar Operating Pressure: Maximizes the capacity of direct injection injectors
• OEM-Level Installation: Updated design allows for precise original hose routing without interference (e.g., when changing ignition coils or spark plugs)

Plug & Play Installation

The DS25 is a true plug & play solution on the market:

• No cutting, bending, or modifications
• Direct OEM compatibility
• Full DME control like the original pump
• Retains all factory system safety and control functions

Includes a 250 bar capacity high-pressure fuel line that replaces the original without difficult modification.

Software Requirements

Operating the pump requires a software update:

• Bootmod3, MHD, or MG Flasher: activate HPFP upgrade during flashing
• Other solutions: send .BIN file to a knowledgeable specialist

Package Contents

• Dorch HPFP pump + mounting hardware
• Dorch high-pressure fuel line
• PTFE low-pressure hose
• Low-pressure hose clamp
• Plug & Play adapter harness
• Lifetime warranty

Compatibility (B58 GEN1)

Fits various BMW models equipped with the B58 GEN1 engine:

• F20/21 140i / 140xi
• F22/23 240i / 240xi
• F30/31/34 340i / 340xi
• F32/33/36 440i / 440xi
• G30/31 540i / 540xi*
• G32 640i / 640xi*
• G11/12 740i / 740xi*
• G01 X3 M40i*
• G02 X4 M40i*

* Only models up to 2019

❌ Not compatible with 2020+ B58 engines