SKU: 31928122418

Cylinder 4 Cooling Connection

Sale price$60.26 Regular price$66.95
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Cylinder 4 Cooling ConnectionThis kit is designed to help increase the cooling to the #4 cylinder on the Subaru EJ series engines. This hose kit connects to an existing port on the back of the left hand side of the motor that is blocked off from the factory with a plug. Compatibility: All Subaru EJ Series Motors Included in the kit: 10 Inches of Gates Engine Coolant Hose 10 AN 45 Degree Push To Connect Fitting 10 AN to Metric Straight Thread AdapterAluminum Crush Washer for

This kit is designed to help increase the cooling to the #4 cylinder on the Subaru EJ series engines. This hose kit connects to an existing port on the back of the left hand side of the motor that is blocked off from the factory with a plug.

Compatibility:
All Subaru EJ Series Motors

Included in the kit:

10 Inches of Gates Engine Coolant Hose
-10 AN 45 Degree Push To Connect Fitting
-10 AN to Metric Straight Thread Adapter
Aluminum Crush Washer for Metric Straight Thread Connection
304 Stainless Steel 5/8” Barbed Tee Connection
Qty 4 Stainless Steel Hose Clamps
12mm Allen Socket with 1/2” Square Drive


Basic Installation Steps:

  • Drain coolant from engine below the level of the plug on the back of the engine

  • Remove factory coolant plug using the supplied 12mm allen socket

  • Install straight thread to 10AN adapter with included aluminum crush washer

  • Test fit 10AN 45 degree fitting with hose attached

  • Locate heater core hose that connects to firewall and mark where to cut and install stainless tee fitting

  • Trim included Gates heater hose (different chassis and models require slightly different hose lengths)

  • Install tee connector inline with existing heater hose with the center connection being used for the provided line, use hose clamps on all 4 barbed hose connections

  • Tighten 10AN connection, ensure the new hose does not rub on any other parts in the engine bay paying close attention to the steering shaft

  • Refill coolant and properly “burp” the system to remove all air introduced during the installation

    *Note: If you see corrosion or surface imperfections on the sealing face of the block you can apply Permatex or similar sealing material to the metric straight threads on the adapter fitting into the block for a secondary sealing point. NEVER apply any type of sealant or tape to the threads on AN fittings.

This is a universal kit, depending on the year and chassis this is being installed on the length of heater hose and the point at which you connect into the factory hoses will be slightly different. We will be posting more detailed instructions and photos for each unique application very soon.

The intent of this kit is to solve an imbalance in the factory cooling system on the EJ series motors. Subaru designed the cooling system to ensure that cylinder #4 ran slightly hotter than the rest of the cylinders, this allowed them to then tune the system so that if knock were to occur is would happen first on cylinder #4. While this simplifies the control system on a factory car it doesn’t allow tuners to get the most potential out of the engines, the tune is basically limited by an intentional design flaw in the cooling system. Since this type of modification (not just our kit) can effect knock response on your engine we recommend consulting with your tuner before installation and having your tuner review logs after installation. Professional installation is recommended.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 31928122418

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 467 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Alp acct
West Palm Beach, US
★★★★★ 4
doesn't whistle as loud as other chuckit balls I've seen, but a good ball.
makes some noise, but I've seen (and played with) others at the dog park that whistle much louder than the 1 I got. all Chuckit balls... so, just this one I'm betting. but it flys good and the dog loves to chase it. he chews it a fair bit as well and the ball has not taken much damage from him (lab mix) or others that have had a go at it. I'll likely buy another at some point ... just wish it was a little louder when flying.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 4, 2025
K
Verified Purchase
KA
Fort Morgan, US
★★★★★ 5
Blue ball, my dog likes blue.
Just a ball right? Evidently not! My dog won’t chase an orange chuck it ball or the glow in the dark ball- only the blue one 🤷🏼‍♀️
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2025
B
Verified Purchase
Baker-s
Fort Morgan, US
★★★★★ 3
I wanted a blue ball
It's great. It just wasn't blue.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 5, 2026
J
Verified Purchase
Jr
Massapequa, US
★★★★★ 5
its a great ball
works well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 8, 2025
T
Verified Purchase
Tabs
Lake Worth, US
★★★★★ 5
Love this set!!!
Size: Medium (2.5"), Style: Fetch Pack 1
I was trying to figure out which of the many different balls this company offers, and I was getting frustrated but then i was SOOOO happy to see they had multiple sets that had multiple of the different balls they offer!! I bought this set and the other set they offer, but this one was my favorite and I think my dogs too! The orange ball works great and bounces just high enough that it doesn’t clear our patio wall, but enough for him to go and jump up to retrieve. But the glow in the dark ball is his favorite! Both me and my pomsky were blown away how we brought the glow in the dark ball outside just as the sun was going down, and when we brought it back inside it was BRIGHT AND GLOWY!!! Even with the sun going down and not much light left!! He loves to play with it in the house after it’s all glowy from the sun. Sometimes we even glow it up under a light inside the house if it’s dark outside, and he will play with it outside in the dark haha he loves it!!! And I think it’s pretty cool too!! All of the balls this company overs are VERY durable! We realized early on that we cannot give our dog regular tennis balls cuz his favorite thing to do is tear the outside fabric off!! So we were trying to figure out what company has the best balls for dogs so they can’t sit there and try to pry them apart, and we found this company!! We have already bought from them about 3 times and all of their balls are durable and bounce how they say they will bounce!! They have the super bouncers and the glow in the dark one and the one with angles that will bounce in different directions and the ones you can throw REALLYY far! Overall, all the balls from this company are very durable, bounce really good, and keep my dog occupied without allowing him to sit there and tear it apart!!! Which i love cuz I do not like when he stops playing with us to sit there and try to take off the fabric, cuz then he could swallow it! So always buy the balls from this company!!! They are the best and most durable!!!! Also plenty soft for your dogs mouth so they can chew on it a bit and it won’t hurt their teeth/gums!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 28, 2024

recommand products