SKU: 16071019961

JZ Upper Water Neck with Swirl Pot

Sale price$360.00 Regular price$400.00
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

JZ Upper Water Neck with Swirl PotThe ultimate cooling upgrade for street, drift, and high power JZ builds. Stop fighting trapped air, unstable temps, ugly plumbing, and cramped swap bays. Our Boost House JZ Upper Water Neck combines CFD engineered cooling tech with swap friendly packaging to fix the cooling issues JZ engines are known for. Key Benefits include CFD Engineered Integrated Swirl Pot High velocity internal swirl rapidly separates air from coolant. Eliminates steam pockets

The ultimate cooling upgrade for street, drift, and high-power JZ builds.

Stop fighting trapped air, unstable temps, ugly plumbing, and cramped swap bays.
Our Boost House JZ Upper Water Neck combines CFD-engineered cooling tech with swap-friendly packaging to fix the cooling issues JZ engines are known for.

Key Benefits include

🌀 CFD-Engineered Integrated Swirl Pot 

  • High-velocity internal swirl rapidly separates air from coolant.
  • Eliminates steam pockets in the back of the head.
  • More stable coolant temps under hard driving and long pulls.

❌ Thermostat Bypass Block-Off — Thermostat Delete Recommended

Our design blocks the OEM thermostat bypass port, which forces all coolant through the radiator instead of recirculating directly back into the pump.

➡️ This setup is designed to be used with a thermostat delete.
Using the bypass block-off with a closed thermostat can cause overheating because coolant cannot recirculate during warm-up.

Street Car Options:
We offer two ways to retain controlled bypass flow for street-driven cars:

  1. Use the built-in calibrated bleed option:
    The underside of the block-off includes a dimpled pilot hole.
    You can fully drill this through to create a small, controlled bypass orifice.
  2. Drill the thermostat itself:
    Use our included drill template to add a precise bleed hole through the thermostat.
    This maintains some warm-up flow while keeping temperatures stable.

💧 +0.35L Extra Coolant Capacity

  • Adds ~350 mL to the cooling system.
  • More thermal mass = more stability during drift, track, or high-boost pulls.

🔧 Built for Single Turbo Conversions

  • Integrated single turbo coolant outlet.
  • No more blocking unused twin-turbo ports.
  • Cleaner and more reliable coolant routing.

🔻 Low-Profile, Swap-Friendly Design

  • Clears tight S-chassis, E36/46, and other transplant bays.
  • Perfect for JZ swaps with minimal bonnet clearance.
  • No bonnet spacing, cutting, or bracing modifications required.

🧰 Cleaner Bay + Fewer Leak Points

  • Integrates the swirl pot, neck, and turbo feed into one compact housing.
  • Eliminates tees, adapters, multiple hoses, and messy aftermarket plumbing.
  • Reduced leak points and a far more professional look.

🏁 Track-Proven Cooling Stability

  • Swirl pot sits at the highest point for effortless bleeding.
  • Maintains coolant integrity under high G-forces and rapid temperature swings.
  • Ideal for drift, time attack, drag, and high-power street builds.

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: 16071019961

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T
Tim
Phoenix, US
★★★★★ 5
waterproof
This bikini trimmer is a compact, handheld device, roughly the size of a lipstick tube, that operates on a rechargeable battery and comes with a USB charging cable and a protective cap. I have been using this trimmer for a little over a week now as part of my personal grooming routine. I initially picked this item because I was looking for a small, waterproof tool that could be used quickly and efficiently. I appreciate that the body is made out of a smooth, waterproof plastic, which I think makes it easy to clean and feels hygienic for both wet and dry use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 11, 2025
H
Hammie Fraser
New York, US
★★★★★ 5
Handy Compact Trimmer
I really like how this trimmer has two functions in one, it makes things super convenient. It’s small and easy to hold, so I can use it on different areas without feeling awkward. I tried it on both legs and underarms, and it gave a smooth finish without irritation. The design makes it easy to switch between trimming and shaving, which is a nice touch. I also appreciate that it’s waterproof, so I can just rinse it clean after using it. Overall, it feels like a simple and practical tool to keep around for quick grooming.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 1, 2025
J
Jason
Lowell, US
★★★★★ 5
Bikini Trimmer for Women
This bikini trimmer l bought for my wife comes with every attachments for her need,such as body hair,the bikini line and underarms and more. its design is sleek and minimalist. the trimmer is compact and powerful,easy to handle,and very effective,which makes shaving quick and smooth. the trimmer also be gentle on her skin,no pulling or causing any irritation. she said she feels comfortable to hold in the hand. she likes how quietly it works and how long the battery lasts compared with the old one. and wide variety of attachments are easy to change and clean. overall different interchangeable heads make it incredibly versatile,that will satisfy all of her hair removal needs! this trimmer set is a must have for her.
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Reviewed in the United States on September 6, 2025
M
Mandy J. Parker
Charlottesville, US
★★★★★ 5
efficiently remove body hair
It is excellent bikini trimmer to trim overgrown hair. Works great and super easy to use. It's easy to handle, charges quickly, and trims without irritation. I like the 2 in 1 dual side design. The round head hair remover works very efficient and after removal of arm hair, I don't feel any pain. And the residue hair could be released from the device easily. Perfect for travel or quick touch-ups at home. Love the cute design and color. It is affordable bikini trimmer that gets the job done without irritation or nicks.
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Reviewed in the United States on September 5, 2025
M
MoneyPlant
Belleville, US
★★★★★ 5
Functional
I used to get cuts when using regular razors but ever since I switched to this electric razor, I no longer have to worry about getting hurt. The blade is extremely sharp yet gentle and provides a smooth shave on my face, legs, underarms and other areas without any pain. The waterproof feature makes cleaning easy. I can simply rinse it under the tap. The rechargeable design is also very convenient. It's small and portable easy to take on business trips and travels! The shaver glides smoothly on underarms and the detailer head gives perfect shaping for bikini lines. Fully waterproof for shower use and the self cleaning blades rinse effortlessly.
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Reviewed in the United States on September 4, 2025

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