SKU: 31928122418

Cylinder 4 Cooling Connection

Sale price$60.26 Regular price$66.95
Save 10%

Pay in installments of $16.74 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 17 - Aug 22

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 11 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
Verified Purchase
Jackie P
Battle Creek, US
★★★★★ 5
Sturdy iPad case
Color: Black
Great case. Sturdy and easy to install. Would purchase from this seller again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
H
Verified Purchase
HallMonitor
Carnegie, US
★★★★★ 5
Durable and Rugged
Color: Black
I've had it for a few weeks now. It was a replacement I bought after buying several vinyl type covers. This one is a good gauge of plastic and rubber. The rubber seems pretty strong and it protects the iPad well on the corners and back. The back is mostly covered except for the Apple logo in the center. In addition to protecting the corners and also protects the camera lens as the rubber after insulation is a little bit higher than the lens so when you put this down, it's not going to scratch the lens. It has a pen slot, which I like and plenty of room to grip the device if I'm carrying it from place a place or when I'm using it, I can grip the edge and not touch the screen. One of the things I would've liked included is a screen protector, but nothing covers the screen. I also miss the folio type cover because the screen will gather dust now. But, Apple screens are fairly durable so I'm not too worried about breaking it. It was easy to install. It came in as it came in a couple of pieces that you just pressed together. All the controls are obvious as they are under the rubber, but they look like keys. One more thing I might bring up is the charging port. It's easy to get to even though it's a little deep. On my iPad the touch sensor is on the on off button and it is a little harder to do than if I didn't have any case on it, but that is to be expected. It also has an easel that unfolds from the back if you want to sit it up, but I don't use it for watching anything since I have a real TV set. So far I like it and I'm glad I bought this as I don't think it's going to wear out as quickly from me handling it as the others did. The value was good as long as it lasts.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
C
Verified Purchase
Clint
New York, US
★★★★★ 5
iPad case is great
Color: Black
Fits great. Like the stand feature on the back
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
L
Verified Purchase
Linda
Dallas, US
★★★★★ 5
Screen protector
Item Package Quantity: 2
I had a hard time applying it to my screen because of the size. I can say it may take 2 people to apply it. Good quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 22, 2025
A
Verified Purchase
Amazon Customer
Lexington, US
★★★★★ 5
Be certain that device screen is COMPLETELY dust/lint free.
Item Package Quantity: 2, Item Package Quantity: 2
This comes in a two-pack, and both were certainly needed. After installing the screen protector the first time, I saw that there were several teeny/tiny specks of dust or lint that were visible and caused circles to form around the specks of dust/lint where the screen protector didn’t firmly attach to the iPad screen. It was not fixable. I learned from that experience. So, when I installed the second screen protector, I made sure there was no dust/lint on the iPad screen, and made sure that the sticky backing of the screen protector was also COMPLETELY free of dust/lint. Be sure to use the included “Perfect Screen Guard” to pick up the lint/dust before you finally place the screen protector on the device screen!! I give this a “5” because it did great after being certain that there was no dust/lint.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 5, 2023

recommand products