Bykski Fillport / Pass Thru Fitting (B-WPJ-X) - Black
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Bykski Fillport / Pass Thru Fitting (B-WPJ-X)

5.0 (4) 5.0 out of 5 stars, 4 reviews Read the reviews
B-WPJ-X-BK In stock in Boise, ID
$13.99USDFree shipping over $125

US import duties and tariffs are included in every price.

Ships the same business day on orders placed before 2:00 PM MST. Overnight delivery available at checkout.
Ships directly from our Idaho inventory. You avoid overseas sellers, processing delays, international shipping, customs hold-ups and additional fees.
What this works with

Check these against your build before you order. If anything here does not match what you have, ask us first — it is cheaper than a return.

The Bykski Fillport / Pass Thru Fitting is very useful for routing loop runs through panels. The fitting is also very useful when used as a fill or drain port. This original version has a shorter body profile than version 2.

Not sure? Send us your model/part number and we'll confirm it for you.
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Why buy it here
US warranty, handled in Boise
Claims are settled here, by the people who sold it to you.
Exclusive US distributor
The official US source for Bykski, so every part is genuine.

Before you install it

This is a component, not an assembly — how it goes in depends on the loop it is joining. What does not change is the last step: leak test before power. Run the pump on a bench supply with the rest of the system unpowered. 24 hours is the standard, an hour is the minimum.

Water cooling parts are designed for self-installation by qualified users. Damage caused by installation error isn't covered — if you're unsure at any step, ask before you power the loop.

About this part

The Bykski Fillport / Pass Thru Fitting is very useful for routing loop runs through panels. The fitting is also very useful when used as a fill or drain port. This original version has a shorter body profile than version 2.

In the box

The Bykski Fillport / Pass Thru Fitting is very useful for routing loop runs through panels. The fitting is also very useful when used as a fill or drain port. This original version has a shorter body profile than version 2.

If the gallery shows a parts diagram, that diagram is the source of truth for what ships.
Datasheet
G 1/4 Inside Thread.
SKUB-WPJ-X-BK

What buyers said

Left by people who bought this part here. Compatibility reports are the useful ones — if you fitted it, say which board.

Customer Reviews

Based on 4 reviews
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e
eric e.
Best Liquid Cooling Parts Ever

No problems at all! Fitment is perfect....

e
eric e.
Best Liquid Cooling Parts Ever

No problems at all! Fitment is perfect....

P
Paul D.
Great Quality at a Reasonable Price

Bykski fittings are my go to fittings. Everything they make is of the highest quality. The prices make their products even more attractive.

P
Paul D.
Great Quality at a Reasonable Price

Bykski fittings are my go to fittings. Everything they make is of the highest quality. The prices make their products even more attractive.

Questions people ask about this part

Answers specific to B-WPJ-X-BK. If yours isn't here, ask — we'd rather talk you out of the wrong part than sell you one.

What does this part fit?
This part is specified by what it connects to, not by a card model:

The Bykski Fillport / Pass Thru Fitting is very useful for routing loop runs through panels. The fitting is also very useful when used as a fill or drain port. This original version has a shorter body profile than version 2.

Check those against your build before you order. If anything does not match, ask us first — it is cheaper than a return. Part number B-WPJ-X-BK.

Is it in stock, and when will it ship?
Yes — in stock in Boise, Idaho. Orders placed before 2:00 PM MST on a business day ship the same day — we do not ship weekends or US holidays. Overnight delivery is available at checkout.
Can I return it if it turns out not to fit?
Yes. Returns are accepted within 30 days and are easy to start in the support center. Unopened items can be returned for store credit with no restocking fee; other returns carry a restocking fee, higher for items that have been installed or used. So we would rather check the fit with you first: send us the model and we will check it against this part.
Will I pay import duties or customs charges on delivery?
Not on a US order. US import duties and tariffs are already included in the price, so nothing is collected at the door and there is no brokerage fee. Orders shipped outside the US may owe that country's customs fees and duties.
Who handles the warranty?
BYKSKI.US, the exclusive US distributor, from Boise, Idaho. Claims are handled domestically rather than returned to an overseas factory. Damage caused by installation error is not covered.
Is shipping free?
Shipping is free on orders over $125 to addresses in the lower 48 US states.
Are printed instructions included?
No printed manual is included. Installation references are in the product gallery images, and the install guides on this site cover the process step by step.
Do I need anything else to use it?
Check the parts list above against what you already have. If you are building a loop from scratch, send us the full parts list and we will tell you what is missing before you order.

Ask us before you order

Send your exact hardware model and we'll confirm the right part before you spend $13.99 — or tell you honestly that this isn't the one.

Returns are accepted within 30 days and are easy to start in the support center. Unopened items can be returned for store credit with no restocking fee; other returns carry a restocking fee, higher for items that have been installed or used.

Ask about compatibility