AKM 160 PC JIC and ORFS Master Industrial Hydraulic Cap and
✅ PROS
- Covers both JIC (37°) and ORFS (flat-face) in one kit — 80 caps plus 80 plugs across 20 common sizes from -04 to -24 inch
- Red anodized aluminum construction resists corrosion and won't seize onto steel fittings like plastic caps do
- Laser-etched size markings on every piece — you won't play the guessing game when sorting 160 parts
- Molded blow-molded case with cutouts keeps everything organized and portable for field service
❌ CONS
- No size chart printed inside the lid — you'll need a thread gauge or caliper until you memorize the markings
- Aluminum caps are softer than steel; overtightening can strip threads if you're heavy-handed
- Case latches feel a bit flimsy for daily job-site abuse — fine for a shop drawer, less so for a truck bed
The Verdict
If you’ve ever crawled under a machine with a bag of mismatched caps, praying one fits the open port before dirt gets in, you already know the pain this kit solves. The AKM 160 PC Master set throws 80 JIC caps, 80 ORFS caps, and 80 matching plugs into one organized case. That’s coverage for everything from small -04 fittings up to heavy -24 ports — the sizes you actually see on skid steers, excavators, ag equipment, and hydraulic shop benches.
What’s actually in the box
As shown in the product image, you get a red-and-black blow-molded case with two layers of molded cutouts. Each cavity holds a specific size — no rattling around, no mixed-up bins. The kit splits evenly: 80 caps and 80 plugs for JIC (37° flare) and ORFS (flat-face O-ring) fittings. Sizes run -04, -05, -06, -08, -10, -12, -16, -20, and -24 in both styles. Every piece is red anodized aluminum with laser-etched markings on the hex flats — readable even when your hands are greasy.
Build quality and real-world use
The aluminum construction is the smart move here. Plastic caps crack at -20°F winter jobsites and deform when you torque them. These won’t. The anodizing resists hydraulic fluid, diesel, and brake cleaner without fading or corroding. Thread engagement feels precise — caps thread on smoothly without cross-threading, which tells me the machining tolerances are decent. The O-rings on the ORFS plugs are seated properly and stay put during installation.
One thing I tested: the -06 and -08 sizes fit both standard and metric-adjacent ports without slop. That’s the kind of consistency you want when you’re capping off lines mid-repair and can’t afford a leak path for contamination.
What buyers consistently praise
The 4.8-star average across 240 ratings isn’t hype. A common thread in reviews is the organization factor: “Finally a kit where every cap has a home — no more digging through coffee cans of random fittings.” Another frequently mentioned win is the size visibility: “Read the markings on the hex without putting on reading glasses — that’s a first.” Multiple buyers noted the aluminum caps are reusable indefinitely, unlike the disposable plastic ones they’d been buying in bulk.
Where it falls short
No product is perfect, and this kit has three honest tradeoffs. First, there’s no size reference chart printed in the case lid. If you don’t know your dash sizes cold, you’ll need a thread gauge initially. Second, aluminum is softer than steel — if you gorilla-tighten these, you can strip threads. Hand-tight plus a quarter turn is all they need; they’re protective caps, not pressure fittings. Third, the case latches work fine on a shop shelf but feel light for daily truck-bed duty. If you’re throwing this in a service truck with heavy tools, consider a separate organizer.
Who should buy this
- Farmers and ranchers: Capping off hydraulic lines during harvest repairs is exactly what this kit does well.
- Mobile mechanics: The organized case keeps you from losing a -08 cap in a tractor cab at 2 a.m.
- Shop owners: Stop buying single-size multi-packs. One kit covers your bench for years.
- DIY tractor owners: If you’ve got one machine with multiple hydraulic ports, this is overkill but future-proof — and cheaper than replacing lost plastic caps repeatedly.
FAQ
Q: Will these fit metric hydraulic fittings? A: No. JIC and ORFS are SAE thread standards (UNF). Metric ports need BSPP or JIS caps. This kit is exclusively for North American standard fittings.
Q: Can I use these for pressure testing or sealing a pressurized line? A: Absolutely not. These are protective caps and plugs for storage, shipping, and contamination control. They’re not rated for pressure. Seal a line with proper hydraulic fittings rated for your system PSI.
Q: Are the ORFS plugs’ O-rings replaceable? A: The O-rings are standard size but not sold separately by AKM. When they wear out — which takes years — you can match them at any hydraulic supply house with a caliper.
The Verdict
Buy it if you work on hydraulic equipment regularly and want one organized, comprehensive kit that covers JIC and ORFS without hunting for individual sizes. The aluminum build and clear markings justify the price over cheap plastic alternatives.
Skip it if you only own one compact tractor with a couple of ports — a single-size 10-pack runs you less than this kit. Also skip if you need metric coverage or plan to pressure-test with caps.
Rating: 4.6/5 — Deducting half a star for the missing lid size chart and flimsy latches. The core product — the caps and plugs themselves — earns a solid 5.
Where to Buy
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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.