Will this Gray Water Drain Cap fit my Vanagon, and how do I confirm compatibility?

This Gray Water Drain Cap is designed specifically for late-model Volkswagen Vanagons. It fits Vanagon years 1986-1991, including all engine types, drive configurations, and transmissions for those years. To ensure proper fitment, check that your existing gray water tank outlet matches the thread size and design of this cap. If your original cap is missing or worn, this replacement drain cap is made to OEM specifications, so it will restore a factory-tight seal for your tank.

What features does the GoWesty Gray Water Drain Cap offer, and how is it different from my original cap?

GoWesty's drain cap is molded with high-quality materials for a long-lasting replacement that resists UV damage and cracking. A major upgrade is the included retainer strap, which keeps the cap attached to your Vanagon, so you'll never lose it accidentally during draining. The secure fit helps prevent leaks and odors from escaping your gray water tank. Many Vanagon owners choose this cap as an upgrade or direct replacement for missing, cracked, or hard-to-turn original caps.

Is installation of the Gray Water Drain Cap easy, and are there tips for maintenance or care?

Yes, installing your new drain cap is quick and straightforward—simply screw it onto the drain outlet until it's firmly sealed. The attached retainer strap clips conveniently onto the tank or bracket to avoid misplacement. For maintenance, periodically inspect the sealing surface and clean off any debris to ensure a tight fit. If your old drain cap is worn, cracked, or hard to remove, replacing it with this GoWesty cap restores proper sealing and peace of mind on the road. GoWesty's excellent support team is always available if you have any installation or fitment questions.

Gray water drain cap

Name: Gray Water Drain Cap [Late Vanagon]
SKU: GVW-255-803
Price: 2.95 USD
Availability: InStock

Black plastic fuel tank cap with attached tether on white background

Gray Water Drain Cap [Late Vanagon]

Product:	GVW-255-803
Works With:	1983-1991
Manufacturer:	Quality Aftermarket
Availability:	Good Stock

$2.95

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Drain cap for sink gray water. Includes retainer strap.

Fit note: Before you order, please take a moment to verify the size of your drain pipe. This cap fits sink drains that measure approximately 1". Click here to order our 1.5" drain cap.

5 stars: 9 (100%)
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Easy to use, Easy to find when in use

The long "tail" on this exterior sink drain plug makes it easy to locate when you park and are ready to remove the plug for using your sink . I always immediately place it on the carpet to the back corner of the driver's seat, near the door by the seat back (it helps me to keep track of it). I also use a collapsible nylon "bucket" to catch the sink drain water, holding it in place with a rock found around the campsite.

Grey water cap

Fits perfectly under the grey water spout.

Grey Water drain cap

Mine was old and crusty. This was a perfect cheap little upgrade 👌🏾

Fits great

Does as intended. Fits great

Good fit a fine product

This is one of those things you just need and this one fits perfect

Fits

It much to add, it fits and priced well

👍

Does the job!

I purchased this cap almost 4 years ago and it is going strong!

Drain cap

Works like a charm....and the best part is the plastic lanyard (so you don't undo the cap and lose it, which is surely what would have happened to me!). For $2.34, you can't go wrong