DeatschWerks 9-437-1030 DW430C 430LPH In-Tank Fuel Pump for 1988-1991 BMW E30

Vehicle Fitment

• 1988-1991 BMW 325i (E30, 2.5L inline-6)
• 1988-1990 BMW 325is (E30, 2.5L inline-6)
• 1988-1991 BMW 325iX (E30, 2.5L inline-6)
• 1988-1991 BMW M3 (E30, 2.5L inline-6)

Fitment Notes

• Designed as a drop-in replacement for the OEM fuel pump assembly on the above models.
• High ethanol content fuels may require checking compatibility with fuel lines and seals.
• Ensure proper electrical wiring and pump relay to support increased current draw for 430 LPH performance usage.

Features

• Flow rate of approximately 430 liters per hour (LPH), suitable for boosted or high performance setups.
• Compact DW430C design, allowing fitment inside the stock pump housing without major modifications.
• Corrosion-resistant construction for better durability.
• Stable fuel pressure under high load and RPM conditions to avoid fuel starvation.
• Compatibility with fuel blends (depending on local fuel quality / ethanol mix; check seals/components).
• OEM-style inlet/outlet fittings to simplify installation.
• Precision engineering (balanced impeller etc.) for smooth, quiet operation.
• Backed by DeatschWerks customer warranty.

Specifications

• Flow Rate: ~ 430 LPH 
• Part Number: 9-437-1030 (DW430C) 
• Compatible Vehicles: 1988-1991 BMW 325i, 1988-1990 325is, 1988-1991 325iX, 1988-1991 E30 M3 
• Installation Type: In-tank, OEM style drop-in replacement 
• Fuel Type Compatibility: Gasoline; check compatibility if using ethanol or high-E blends. 
• Warranty: Standard DeatschWerks warranty (often 3 years depending on vendor) 

Included Components

• 1x DW430C Fuel Pump (Part # 9-437-1030)

Product Description

The DeatschWerks 9-437-1030 (DW430C) is a high-flow, compact in-tank fuel pump specifically engineered for the BMW E30 platform. With a flow rate of about **430 LPH**, it provides significantly more fuel delivery than stock for performance builds, making it well-suited for boosted setups, higher RPM operation, or any modification pushing past stock fueling limits.

It installs as a drop-in replacement in the factory pump housing, which helps maintain original fitment geometry and avoids complex modifications. Built with durable materials, matched OEM-style fittings, and engineered for stable performance under load, this pump is ideal for BMW E30 owners looking to upgrade their fuel delivery while retaining reliability.