Bosch 300hp Marine Injector - 1994-1998 5.9L 12V Cummins 155°

The Bosch 0432133864-IIS is a new genuine Bosch 4-hole injector originally spec'd for CPL 1570 and CPL 1613 marine Cummins applications - and widely used as a 300hp performance upgrade in 1994-1998 5.9L 12V Cummins pickup trucks. Rated to support up to 300hp with 50-60hp gains depending on fuel plate adjustments. No core required. Includes 1.5mm copper washers (D3920174). Sold individually - purchase 6 for a complete engine set.

Marine Injectors in a Pickup - What That Means for Your Build

These are genuine Bosch injectors natively spec'd for CPL 1570 and CPL 1613 marine Cummins engines. In marine applications they are the OE injector. In a 1994-1998 12V Cummins pickup, they are used as a performance upgrade - delivering 50-60hp gains over stock depending on fuel plate adjustments and supporting builds up to 300hp.

The key difference to understand is spray angle. These injectors use a 155° spray pattern. The factory 1994-1998 pickup piston bowl is designed around a 145° spray angle. That 10° difference means the spray cone is slightly wider than what the stock piston bowl was shaped to receive. Running timing under 21 degrees keeps the spray pattern inside the bowl on a stock-piston truck. If the build uses aftermarket pistons designed for a wider spray angle, that constraint changes - but for stock-piston applications, the timing note is the critical variable to manage.

For a 12V Cummins pickup owner who wants a genuine Bosch performance injector with a strong track record on this platform, this is the correct upgrade path. For a stock-output rebuild, a standard-spec replacement is the right choice instead.

Native Fitment vs. Pickup Application

These injectors are natively spec'd for the following Cummins B Series marine CPL numbers:

• CPL 1570
• CPL 1613

In pickup use, they fit 1994-1998 5.9L 12V Cummins trucks as a performance upgrade. The spray angle difference (155° injector vs. 145° stock pickup piston bowl) is managed by keeping timing under 21 degrees on stock-piston trucks. Verify the piston spec and timing plan before ordering if the engine has been rebuilt or modified.

What's Included - and What to Order Separately

Each injector includes 1.5mm copper washers (D3920174). A complete engine set requires 6 injectors. The following accessories are sold separately and may be needed for a complete installation:

• Return line washers: PN DPE602 (sold separately)
• 0.5mm nozzle washer (optional): PN D3930324 (sold separately)
• Injector dust seal: PN D3909356 (sold separately)

Avoid These Common Mistakes

• Ignoring the spray angle difference - these injectors use a 155° spray pattern; the stock 94-98 pickup piston bowl is 145°; running timing over 21 degrees on a stock-piston truck moves the spray outside the bowl
• Ordering for a stock-output rebuild - this is a 300hp-rated marine-spec performance injector, not a stock-spec replacement for a standard pickup application
• Ordering one injector expecting a complete set - sold individually; a full engine set requires 6
• Forgetting return line washers or dust seals - these are sold separately and commonly needed when replacing injectors on this platform

Before You Order

• Engine is a 1994-1998 5.9L 12V Cummins pickup (or CPL 1570 / 1613 marine application)
• Performance goal confirmed - 300hp-rated marine-spec upgrade injector, not a stock replacement
• Spray angle and timing plan confirmed - stock pistons require timing under 21 degrees with these 155° injectors
• Quantity confirmed - 6 injectors needed for a complete set
• Required sold-separately accessories identified and added to the order
• Non-CA / non-CO address confirmed

The Bosch 0432133864-IIS is the correct 300hp marine-spec upgrade injector for the 1994-1998 12V Cummins pickup when the timing plan accounts for the 155° spray angle and the build is ready to support the power increase.

Frequently Asked Questions