TracTuff K20/ K24 Water Pump Housing Delete

Description

August 2025

I redesigned the alternator bracket once again… this time to include a floating nut that I had seen being used in the factory L15B alternator design. The new design eliminates the stress associated with clamping down on the alternator lower mounting tab.

January of 2023

I redesigned the alternator bracket so the product would play nice with the Dailey Engineering Dry Sump kit. I am now told that these kits are the only way to run an alternator with their beautiful design.

As a result of moving the alternator upwards to clear the Dailey Engineering Dry Sump Pump, the water pump delete plate tensioner window had to be moved to eliminate tensioner misalignment.

While redrawing the tensioner window, I decided to ditch the M8 tensioner retaining bolt, and designed a precision-ground stainless pin. The stainless pin fits the rod end with zero slop and leaves no room for threads to get bashed and introducing slop. The stainless steel pin is retained by an included 5/16″ circlip.

All the things I’ve said about this product over the years still stand true; the uncoupling of the OEM K20A, K20Z, K24A, and K24Z mechanical water pump from the crankshaft offers the following benefits…

• Reduction in parasitic drag.
• Free horsepower and torque.
• Elimination of pump cavitation associated with water pump RPM.
• Better control over cooling system temperatures through the use of programming.
• Manually override pump and fan(s) to cool the motor while the engine is off.
• Space you can free up by eliminating the OEM items.

Various alternators can be used with this kit, but I highly recommend the S2000 unit. The 2000-2001 DC2 Type R (B18C5) has the second-highest amperage output, and the 1999-2000 Civic Si (B16) comes in just below that. Late model B and D series alternators with a ribbed drive pulley can also be used but have fewer belt ribs than the crank pulley (not a big deal, since you’re only driving one accessory).

The S2000 alternator offers the highest amperage but you must be willing/ able to modify the lower mounting ear of the alternator and purchase my reducer bushing for the upper ear being it natively uses larger hardware. It has the same number of pulley ribs, rotates in the same direction, and uses the same plug as the K harness.

Due to the various K series crank pulley diameters (OEM & Aftermarket) and alternator pulley diameters, I do not provide belts. The tensioner in this kit does allow for a wide range of adjustment, but depending on your combination and belt choice, you may need to consider the XL Tensioner Turnbuckle if your tensioner has more than 80% of the rod end thread showing. An overextended tensioner WILL lead to failure, so please either find a shorter belt or order the XL Tensioner Turnbuckle.

To determine the belt length on your own, simply wrap a string around the pulley’s of the installed kit (with the alternator adjustment completely retracted), mark where the end of the string touches, measure that length and call an auto parts store with the length and number of grooves. If the number of groves are not available at that length, you can either go up to the next available length OR reduce the number if ribs. Here are some options.

• 4 Rib Gates Micro V-Belt P/N# K040315*
• 6 Rib Gates Micro V-Belt P/N# K060325* – Fits Fluid Damper & S2000 Alternator Combo
• 6 Rib Dayco Poly-V-Belt P/N# D5060295*
• 6 Rib Dayco Poly-V-Belt P/N# D5060305*
• 6 Rib Dayco Poly-V-Belt P/N# D5060317*
• 6 Rib Dayco Poly-V-Belt P/N# D5060325*

* You can use the part number to cross-reference to another brand. The “6” represents the number of ribs and the four digits proceeding it represent the length. If one of these is close but the next size is to large of a jump… look at 5 and 4 rib belt options.

NOTE: The K20A, K20Z, K24A, and K24Z water pump housing delete CANNOT be used with A/C. Two of the four compressor mounting points are deleted with the water pump housing. I recommend this product for serious street cars and race cars alike… I don’t care what other company’s advertise.

The following links will take you to commonly purchased support parts… Plate inlet fitting, -8 breather port fitting, 20 GPM WP136S electric water pump mount for the Meziere WP136S electric water pump as well as a pump hose kit OR a 55 GPM WP336S electric water pump mount for the Meziere WP336S electric water pump as well as a -16 hose kit or -20 hose kit to get water from the pump to the water pump delete plate.

Product Details

K20A/Z and K24A Configuration