Product Overview
The S3213 fuel water separator with clear drain bowl gives you instant visual confirmation of your fuel condition — no tools, no disassembly, no guesswork. A quick glance at the transparent nylon bowl tells you whether water has accumulated in the filter. Same 10-micron filtration media and 3/8" NPT fit as the standard S3213, now with a built-in drain valve for fast water purging. If you've ever wondered whether your fuel filter actually has water in it, this is the upgrade that answers that question in seconds.
Key Features
Clear Nylon Drain Bowl: Visually check for water accumulation without removing the filter. Catch water contamination before it reaches your injectors.
Built-In Drain Valve: Purge accumulated water in seconds — no tools needed. Just open the valve, drain until clean fuel flows, close it, and you're done.
10-Micron Filtration Media: Same trusted S3213 filtration performance. Traps water droplets, rust, and debris down to 10 microns.
3/8" NPT Inlet/Outlet: Direct replacement for OEM filter heads. Uses standard marine fuel line fittings.
Includes Mounting Bracket: Comes with the 18-7853-1 style mounting bracket and hardware — bolt-on ready out of the box.
Compatibility & Fitment
Brand
Part Numbers Replaced
Mercury / Mariner
35-60494-1, 35-809097, 802893Q01, 35-807172
Sierra Marine
18-7928-1, 18-7932-1, 18-7922, 18-7919
Mallory
9-37801, 9-37802
Moeller / Tempo
033510-10, 035613-10
GLM Marine
24960, 24961
Wix Filters
33264, 33265
Universal Cross-Ref
S3213, S3214, B32013, C14568
Fits most Mercury, Mariner, Yamaha, Suzuki, Honda, and Tohatsu outboard motors with 3/8" NPT fuel connections, 1990-present.
Specifications
Specification
Value
Filter Type
Fuel Water Separator with Clear Drain Bowl
Micron Rating
10 Micron
Port Size
3/8" NPT (Inlet & Outlet)
Bowl Material
Clear Nylon (UV-Stabilized, Ethanol-Resistant)
Canister OD
3.0" (76 mm)
Overall Height (incl. bowl)
~6.5" (165 mm)
Replacement Interval
50-100 Hours or Annually
Included Components
Filter Assembly, Clear Bowl, Drain Valve, Mounting Bracket, Gasket, Hardware
Why Choose This Filter
The clear bowl is not a gimmick — it's a genuine time-saver and safety feature. Before every outing, you can verify fuel condition in under 10 seconds. No unthreading the filter, no catching fuel in a cup, no guessing. Every S3213 assembly ships from US inventory with a 30-day satisfaction guarantee. Most orders ship same-day.
Frequently Asked Questions
Q: How do I know when to drain the bowl?
A: Check the clear bowl before each outing. If you see a visible water layer forming at the bottom (water sinks below fuel), open the drain valve and let it empty until clean fuel flows. The clear bowl makes this a 10-second pre-trip ritual.
Q: Will the clear bowl crack or yellow over time?
A: The R25T-style nylon bowl is UV-stabilized and ethanol-resistant. With normal care it should last multiple seasons. If it eventually clouds or develops a crack, replacement bowls are available separately in our store.
Q: What's included in the box?
A: Complete S3213 filter assembly with clear bowl, drain valve, mounting bracket with 3/8" NPT ports, installation gasket, and mounting hardware. Everything needed for a bolt-on installation.
Q: Does the drain bowl fit a standard sealed S3213?
A: No — the bowl threads onto the bottom of this specific S3213 assembly body. The sealed one-piece S3213 does not have a threaded bowl port. If you want a bowl setup, this is the correct product.
Q: Is this compatible with ethanol-blended fuel (E10)?
A: Yes. The clear nylon bowl, internal seals, and filtration media are all designed to handle E10 and non-ethanol marine fuel without degradation.
Q: How is this different from the upgraded replaceable-filter S3213?
A: This is a traditional sealed filter assembly — you replace the entire unit at service time. The upgraded version (linked below) has a reusable aluminum housing with replaceable internal cartridges. Both include a clear bowl. Choose based on whether you prefer lower upfront cost or lower long-term cost.
Q: Can I replace just the filter element inside?
A: No — this S3213 is a sealed assembly. The entire canister is replaced at service time. If you want a serviceable filter where you only swap the cartridge, see our upgraded S3213 below.
🔄 Upgrade Available: Replaceable Filter S3213
We now offer an upgraded S3213 with a replaceable filter element — lower long-term cost, less waste. Same 10-micron filtration, same 3/8" NPT fit.
Upgraded S3213 ($27.99) → — Replaceable element, includes clear bowl
Replacement Cartridge ($10.00) → — Single 10-micron filter element
3-Pack Cartridges ($19.00) → — Best value at $6.33 each
Related Products
S3213 Fuel Water Separator
S3213 Replacement Cartridge
Fuel Filter Base NPT
Clear Water Collection Bowl
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