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TracTuff K20/ K24 Water Pump Housing Delete


In January of 2023 I made three changes/ improvements that I would like to highlight.

  1. I redesigned the alternator bracket so that my product would play nice with the Dailey Engineering Dry Sump kit. From what I am told... this is the only kit with an alternator that works with their beautiful design.
  2. As a result of moving the alternator upwards, the delete plate tensioner window has been moved to eliminate tensioner rod misalignment.
  3. While redesigning the tensioner window I decided to ditch the M8 tensioner bolt in favor for a precision ground stainless pin. The stainless pin fits the rod end with zero slop and leave no room for threads to get bashed... introducing slop. The stainless steel pin is retained by a 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 offer the following benefits... 

  • Reduction in parasitic drag.
  • Free horsepower and torque.
  • Elimination of pump cavitation associated with water pump RPM.
  • Better control over cooling systems temperatures through the use of programing.
  • 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. Understand that late model B and D series alternators with a ribbed drive pulley fit the bracket but have fewer belt ribs than the crank pulley (not a big deal being you are only driving one accessory) and even earlier alternators have a V belt. V belt alternators cannot be used unless you swap out the pulley.

So, if you are looking for the highest amperage OEM option and you are willing/ able to modify the lower mounting ear of the alternator and purchase my reducer bushing for the upper ear... the S2000 alternator is the way to go! It also conveniently has the same number of pulley ribs, natively rotates the same direction, and has the same plug as the K harness.

Due to the various K series crank pulley diameters (OEM & Aftermarket) as well as multiple 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 XL Tensioner Turnbuckle if your tensioner is maxed out and has 80% of the rod ends threads showing. 

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 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 water pump housing delete hardware kit includes an o-ring, zinc plated hardware, a tensioner with QA1 5/16" Rod-ends, a stainless tensioner pin, and a 5/16" circlip. The large 1-5/16"-12 SAE (-16AN ORB) water inlet port is sealed by the o-ring. The breather chamber should be sealed with Hondabond (just like the OEM water pump housing). The smaller 3/4"-16 SAE (-8AN ORB) port is a crankcase breather port... NOT a water port!!!

The alternators pivot hardware is grade 12.9 so the bolt gets torqued to 59 lb. ft. (dry) and then the nyloc nut gets torqued to 62 lb. ft. (dry). If the tensioner is at the end of its adjustment range (80% of the threads shown) it WILL lead to failure. Please find a shorter belt or order the XL Tensioner Turnbuckle.

The following links will take you to associated 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 pump hose kit to get water from the pump to the water pump delete plate.

Product Details

K20A/Z and K24A Configuration

K24Z Configuration

Circlip Retained Precision Ground Stainless Steel Rod-End Retaining Pin