Dorch Replacement Injector Seals - Gen 1 B58
Ships from the brand or distributor, usually in 3–7 business days
Make sure this fits your car
Fits: Gen 1 B58 (through 2019): BMW M140i, M240i (F22), 340i (F30), 440i (F32), 540i (G30), 640i GT (G32), 740i (G11), X3/X4 M40i (G01/G02). Not for Gen 2.
- Shipping at real carrier rates
- 30-day returns on unused parts
- Fitment help before you buy
A set of six replacement combustion seals for Dorch's Gen 1 B58 injectors.
Good to know
- These are for Dorch injectors only, such as the DE1500. They do not fit factory BMW injectors.
- One set does all six cylinders.
Brand: Dorch Engineering · Part #: 605396-6
Gen 1 B58 (through 2019): BMW M140i, M240i (F22), 340i (F30), 440i (F32), 540i (G30), 640i GT (G32), 740i (G11), X3/X4 M40i (G01/G02). Not for Gen 2.
| Model | Chassis | Years | Engine | Fits |
|---|---|---|---|---|
| M140i | F20/F21 | 2016–2019 | Gen 1 B58 | |
| M240i | F22/F23 | 2016–2021 | Gen 1 B58 | |
| 340i | F30/F31/F34 | 2016–2019 | Gen 1 B58 | |
| 440i | F32/F33/F36 | 2017–2020 | Gen 1 B58 | |
| 540i | G30/G31 | 2017–2019 | Gen 1 B58 | |
| 740i | G11/G12 | 2016–2019 | Gen 1 B58 | |
| X3 M40i | G01 | 2018–2019 | Gen 1 B58 | |
| X4 M40i | G02 | 2019 | Gen 1 B58 | |
| 640i GT | G32 | 2018–2019 | Gen 1 B58 | |
| M340i | G20/G21 | 2019–2024 | Gen 2 B58 (TU) | |
| M440i | G22/G23/G26 | 2021–2024 | Gen 2 B58 (TU) | |
| M240i | G42 | 2022–2024 | Gen 2 B58 (TU) | |
| Z4 M40i | G29 | 2019+ | Gen 2 B58 (TU) | |
| GR Supra 3.0 | A90/A91 | 2020+ | Gen 2 B58 (TU) | |
| 540i | G30/G31 | 2020–2023 | Gen 2 B58 (TU) | |
| 740i | G11/G12 | 2020–2022 | Gen 2 B58 (TU) | |
| X3 M40i | G01 | 2020+ | Gen 2 B58 (TU) | |
| X4 M40i | G02 | 2020+ | Gen 2 B58 (TU) | |
| X5 xDrive40i | G05 | 2019–2023 | Gen 2 B58 (TU) | |
| X6 xDrive40i | G06 | 2020–2023 | Gen 2 B58 (TU) | |
| X7 xDrive40i | G07 | 2019–2022 | Gen 2 B58 (TU) | |
| 840i | G14/G15/G16 | 2019+ | Gen 2 B58 (TU) | |
| INEOS Grenadier | Station Wagon/Quartermaster | 2023+ | Gen 2 B58 (TU) | |
| M340i | G20/G21 | 2025+ | Gen 3 B58 (48V) | |
| M440i | G22/G23/G26 | 2025+ | Gen 3 B58 (48V) | |
| M240i | G42 | 2025+ | Gen 3 B58 (48V) |
Not sure? Email sales@b58racing.com with your VIN.
- Ships from the brand or distributor, usually in 3–7 business days.
- Shipping is charged at the carrier's rate, shown at checkout. Orders over 70 lb ship by freight for a flat $99.
- Unused parts can be returned within 30 days. Some items are marked no-refund in their description.
Full details are on our shipping and returns page.
Guides for this part
B58 Fueling Explained: HPFP, LPFP, Port Injection, Flex Fuel and E85
The B58 fuel system has two pumps. The low-pressure pump (LPFP) in the tank feeds the high-pressure pump (HPFP) on the engine, which feeds the direct injectors. On a tuned car, the HPFP is usually the first wall, and eth
B58 HPFP Install: Gen 1 F-Chassis, Gen 2 B58TU and the GR Supra
The B58's high-pressure fuel pump (HPFP) bolts to the back of the valve cover, by the firewall. You disconnect the battery, bleed off the pressure by slowly cracking the 17 mm line nuts into rags, then remove the lines,
Best B58 Mods, In the Order to Do Them
Start with a tune. It is the biggest gain per dollar on any B58. Then add a downpipe and a Stage 2 map, then an upgraded high-pressure fuel pump (HPFP) and an ethanol blend. Only after that should you think about a bigge
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Dorch HPFP O-Ring (Replacement)
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