Exergy 11-19 Ford Power Stroke 6.7L Improved Stock CP4.2 Pump (Scorpion Based)

Ford's 6.7L Power Stroke in the 2011-2019 F-250 and F-350 Super Duty runs a Bosch CP4.2 high pressure pump, and when one lets go it can take the whole fuel system with it. If you are looking at a hard start, a low rail pressure code or a pump that already failed and you want a replacement that addresses the weak spot instead of repeating it, the Exergy E04 40104 improved stock CP4.2 is a direct swap for the factory pump that needs no tune.

What the CP4.2 does on a 6.7 Power Stroke

On the Scorpion engine the CP4.2 sits in the valley and is driven off the engine. It receives fuel from the frame-mounted supply pump, the inlet metering valve sets how much enters the pumping chambers, and two plungers riding on a cam raise it to rail pressure for the piezo injectors. The pump relies on diesel for lubrication, so water, poor lubricity or air in the fuel accelerates wear between the rollers and cam. Once that wear starts, steel particles go everywhere the fuel goes.

Exergy builds this unit from the newer 2015-2019 version of the factory pump, which it says adds flow over the early 2011-2014 pumps, and adds a heavy-duty FPRV screen. The System Saver inlet metering valve comes installed: a two-layer 10 micron stainless screen in place of the factory 85 micron plastic-framed screen. Exergy states injector survival after a pump failure improved by more than 85 percent with the System Saver in its own testing of returned injector sets.

Symptoms of a failing 6.7 CP4.2

• P0087 fuel rail pressure too low, often during towing or a wide-open pull
• Hard or extended crank, then a rough first few seconds
• Sudden stall at speed followed by a crank-no-start
• Reduced power with a fuel pressure message
• Metal flakes in the primary or secondary fuel filter

How to confirm before you buy

Log rail pressure desired and actual alongside low side feed pressure. If feed pressure is fine and rail pressure cannot keep up, the high pressure side is at fault. Cut open both filters and inspect them. Metal means the pump has failed internally and the injectors, rails, lines and tank need attention too. Water in the separator points to the cause. A truck that goes into limp mode under tow with no fuel codes may have a transmission complaint instead, so read our 6R140 limp mode guide before replacing a pump.

Fitment

Exergy lists E04 40104 for 2011-2019 Ford F-250 and F-350 Super Duty with the 6.7L Power Stroke. It is listed as a direct replacement for Ford BC3Z-9A543-A, BC3Z-9A543-B, BC3Q-9B395-CB through -CE and FC3Q-9B395-AA, and Bosch 0 445 010 622, 0 445 010 649 and 0 445 010 851, among others. Some resellers list it for 2011-2014 only, so check the number on your pump or send us your year and VIN. It is not for the 2020-up 6.7L. Browse other Super Duty drivetrain parts on our 6R140 page.

Install notes

• No core charge, no core return. Pump weight is about 16 lb.
• Exergy recommends keeping the factory lift pump, which it says flows enough for about 900 HP at target feed pressure. Any aftermarket lift pump must be able to make at least 68 psi.
• If the old pump shed metal, replace injectors, rails and high pressure lines; an 6.7 injector line kit covers the lines.
• Fit new filters, prime thoroughly with the key cycled and check every fitting for leaks before a road test.
• For tuned trucks past 570 HP, the 10mm stroker CP4.2 is the next step. Pairing extra power with towing? See our 6R140 towing upgrades.

Does the Exergy E04 40104 need tuning?

No. Exergy says it needs no tuning or supporting modifications and is suited to stock trucks up to roughly 570 horsepower.

Do I need an aftermarket lift pump with this pump?

Exergy recommends the factory lift pump. If you do use an aftermarket unit, it must be capable of at least 68 psi.

Will it fit my 2020 F-250?

No. It is listed for 2011-2019 F-250 and F-350 Super Duty with the 6.7L Power Stroke only.

What else do I replace if my original pump failed?

If the filters show metal, plan on injectors, rails, high pressure lines, filters and cleaning the tank and supply lines. Installing a new pump into a contaminated system usually leads to another failure.

Is there a core charge?

No. Exergy lists no core charge and no core return for this pump.

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