iFJF R12T vs Genuine Racor 120A Fuel Filter: A Real Tractor Owner Tears Them Apart

iFJF R12T vs Racor 120A — At a Glance

The Full Story — Roger's Tear-Down

If you own a Kubota BX series tractor, you've probably heard about the Racor 120A fuel filter upgrade. It's one of the most popular mods in the compact tractor world — replace the dinky factory primary filter with a beefy Racor assembly that actually separates water and flows enough fuel for any job.

But a genuine Racor 120A assembly runs about $100. And when you search for one on Amazon, you'll notice a flood of Racor clones at a fraction of the price — including the iFJF R12T.

So the question is: are you getting what you pay for? Or is the clone actually… better in some ways?

Roger, a Kubota BX owner and YouTuber, decided to find out. He bought both a genuine Racor 120A and an iFJF R12T, then performed a full tear-down comparison. Here's everything he discovered — from unboxing to filter media destruction.

What's in the Box — iFJF R12T

The iFJF R12T assembly ships as a complete kit. Inside the box, you get:

• Aluminum filter head with dual in/out ports on both sides
• Filter element (cartridge) pre-installed
• Clear plastic water collection bowl (diesel-rated; metal bowl available separately for gasoline applications)
• PTFE thread tape — a nice touch most brands skip
• Four fittings — 3/8-inch hose barb fittings included
• Two plugs to cap unused ports on the filter head
• Central mounting screw with sealing washer

"It comes well-equipped with extra accessories — PTFE tape, hose barb fittings, and plugs to cap off the unused ports."

Side-by-Side Disassembly & Dimensions

Roger stripped both units down to their three core components — filter head, filter element, and collection bowl — and put calipers on everything. The filter heads are indistinguishable in build quality. The iFJF has "iFJF" cast directly into the aluminum.

Detailed Measurements

The Destruction Test — Which Filter Has More Media?

Here's where the comparison gets serious. Roger took a utility knife and cut off the end caps of both filter cartridges to stretch out and measure the internal pleated filter media on the floor.

The Racor media is yellow. The iFJF media is bright white. Same thickness (20 mils).

But the length? That's where the surprise came.

The iFJF filter media extended 21 to 23 inches past the genuine Racor media on the tape measure.

Why this matters: More filter media surface area means lower flow restriction as the filter loads up with contaminants and a longer effective service life before you need to swap elements.

"The iFJF filter media is actually significantly longer than the genuine Racor media — extending past it by about 21 to 23 and a quarter inches."

The Honest Verdict

Roger is transparent about what this comparison can and cannot tell you:

"I'm not a filter expert — I don't have laboratory equipment to test the actual micron rating or water-separation efficiency," Roger says. "But structurally, the iFJF is highly impressive."

The Ultimate Money-Saving Strategy

🪄 The Hybrid Approach — Best of Both Worlds

Buy the complete iFJF R12T assembly for $29.99 to get the premium aluminum head, bowl, and all fittings. Then spend ~$20 on a genuine Racor replacement element and spin it on.

Total: ~$50 — roughly half the price of a full genuine Racor kit.

Frequently Asked Questions

🤔 Is the iFJF R12T the same as Racor 120A?

Dimensionally, yes. The filter head, element, and bowl are identical in size and thread pattern. The elements are 100% interchangeable between both brands. The iFJF version includes more accessories and has more filter media surface area.

🔧 Can I use this on a gasoline engine?

The clear plastic bowl is rated for diesel fuel. For gasoline applications, you should use a metal bowl (available separately). The filter head and element work with both fuel types.

📏 What are the port sizes?

The iFJF R12T uses NPT ZG1/4-19 ports (standard 120AT / S3240 thread). The kit includes 3/8-inch hose barb fittings and plugs for unused ports.

⚙️ What vehicles is this compatible with?

The R12T 120AT fuel filter water separator fits any diesel engine application where a Racor 120A is specified — including Kubota BX tractors, marine diesels, generators, and light truck diesel conversions.

💧 How do I drain water from the bowl?

The clear nylon bowl lets you visually monitor water accumulation. Simply loosen the drain at the bottom of the bowl to release trapped water. Check and drain monthly as part of your regular maintenance schedule.

Related Products — Build Your Setup

⭐ R12T Complete Combo Kit

$29.99

Full assembly — head, element, bowl, all fittings

R12T Assembly with Filter & Bowl

$22.99

Complete unit with element and clear bowl

R12T Filter Base (Head Only)

$17.99

Aluminum head + fittings + plugs

R12T Replacement Filter Element

$17.99

10-micron marine-grade replacement cartridge

R12T Nylon Water Collection Bowl

$13.99

Clear bowl — monitor water level at a glance

🛒 Get the iFJF R12T Complete Kit — $29.99 →