--- product_id: 63841697 title: "OMT 4 Way Automotive AC Diagnostic Manifold Gauge Set for R134a R410a R22 | Includes R134a Couplers Self-Sealing Piercing Can Taps R410a & 29° Adapter ; Solid Brass Build; Ideal for Auto Freon Recharge" brand: "orion motor tech" price: "672.30 DT" currency: TND in_stock: true reviews_count: 13 category: "Orion Motor Tech" url: https://www.desertcart.tn/products/63841697-omt-4-way-automotive-ac-diagnostic-manifold-gauge-set-r134a store_origin: TN region: Tunisia --- # Solid brass & durable build 1.6% calibration accuracy 4-way gauge + 4 color-coded hoses OMT 4 Way Automotive AC Diagnostic Manifold Gauge Set for R134a R410a R22 | Includes R134a Couplers Self-Sealing Piercing Can Taps R410a & 29° Adapter ; Solid Brass Build; Ideal for Auto Freon Recharge **Brand:** orion motor tech **Price:** 672.30 DT **Availability:** ✅ In Stock ## Summary > ❄️ Diagnose Like a Pro, Cool Like a Boss! ## Quick Answers - **What is this?** OMT 4 Way Automotive AC Diagnostic Manifold Gauge Set for R134a R410a R22 | Includes R134a Couplers Self-Sealing Piercing Can Taps R410a & 29° Adapter ; Solid Brass Build; Ideal for Auto Freon Recharge by orion motor tech - **How much does it cost?** 672.30 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/63841697-omt-4-way-automotive-ac-diagnostic-manifold-gauge-set-r134a) ## Best For - orion motor tech enthusiasts ## Why This Product - Trusted orion motor tech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-in-One Precision Kit:** Complete 4-way manifold set with quick couplers & multi-adapters for seamless HVAC diagnostics. - • **Hybrid Anti-Shock Gauges:** Oil-filled core plus dry dial ensures durability and reliable readings even in extreme conditions. - • **Built to Endure & Perform:** Solid brass construction with moisture indicator and 1.6% accuracy calibration screws for long-term reliability. - • **Color-Coded High-Pressure Hoses:** 4-layer PVC hoses rated for 800 psi working pressure, designed for safety and easy identification. - • **Versatile Refrigerant Compatibility:** Supports R134a, R410a, and R22 — perfect for pros and DIYers tackling any AC system. ## Overview The OMT 4 Way Automotive AC Diagnostic Manifold Gauge Set is a professional-grade HVAC tool kit featuring hybrid anti-shock gauges, color-coded heavy-duty hoses rated up to 800 psi, and solid brass construction. Compatible with R134a, R410a, and R22 refrigerants, it offers precise 1.6% accuracy and versatile adapters for comprehensive automotive AC diagnostics and maintenance. ## Description Buy OMT 4 Way Automotive AC Diagnostic Manifold Gauge Set for R134a R410a R22 | Includes R134a Couplers Self-Sealing Piercing Can Taps R410a & 29° Adapter ; Solid Brass Build; Ideal for Auto Freon Recharge: Air Conditioning Line Repair Tools - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Solid quality for diy needs - The gauge block is very hefty and I was surprised by its weight. If it drops it will surely ding the fender easily. The fittings are of decent quality along with the heavy hoses. Valve knobs all are metal open close smoothly. The only thing I did not like there was no resistance when turning at all and made me think sealing at the stem would leak but all seemed ok. The hose end valves were heavy metal having resistance of a tight seal on the stems. The hoses were flexible but solid, I could not squeeze the hose to flatten at all. The plastic case holds everything while it’s not assembled but it will not accommodate a fully assembled with hoses device where you have to disassemble to store in the case. Even if you remove the foam cutouts you still can’t store it assembled, not big deal to hang it assembled but it can collect dust but don’t count on storing it assembled in the case. Tested it and all seemed to work. Review: Vacuum pump connection doesn't fit a vacuum pump. - UPDATE: The kit came with adapters which allowed me to connect my vacuum pump! ----- Gauges seem to work fine, but the vacuum hose doesn't thread onto the standard vacuum pump connections. I have a brand new one and a 20 year old one. Same problem. I'm stuck with a mini split install that I can't complete. ## Features - COMPLETE AC TOOL SET: This kit includes a 4-way gauge, 4 color-coded hoses, 2 adjustable 1/4'' quick couplers, a 1/2'' to 1/4'' 29° trap adapter, a 1/4'' to 5/16'' tank adapter, 5/16'' to 1/4'' angled and straight adapters, and a puncture-style can tap - HYBRID ANTISHOCK GAUGES: The 2.6" high and low pressure gauges combine the best features of dry and liquid-filled designs, with an oil-filled core resisting wear and shock and a dry dial providing better winter performance - BUILT TO LAST: Made from solid brass, ABS, and rubber, this AC manifold gauge set is designed for years of reliable heavy-duty use; the moisture indicator monitors your coolant's condition in real time; and calibration screws ensure 1.6% accuracy - COLOR-CODED HOSES: Blue for low, red for high, yellow for charging, and black for evacuation, these PVC hoses have 4 layers to work with pressure up to 800 psi (4000 psi burst pressure) - WIDE APPLICATION: This car AC gauge set works with R134a, R22, and R410a refrigerants; ideal for both DIY and professional HVAC maintenance, it allows you to measure your system's pressure, evacuate and refill coolant, and more ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B078GJQGYQ | | Best Sellers Rank | #2,609 in Automotive ( See Top 100 in Automotive ) #21 in Air Conditioning Line Repair Tools | | Brand | Orion Motor Tech | | Brand Name | Orion Motor Tech | | Customer Reviews | 4.3 out of 5 stars 2,326 Reviews | | Included Components | 1 x 4 Way Gauge, 4 x Hoses,2 x Quick Couplers,3 x Adapters,1 x Can Tap | | Item Dimensions | 12.6 x 11.81 x 3.74 inches | | Item Weight | 0.27 g | | Item dimensions L x W x H | 12.6 x 11.81 x 3.74 inches | | Manufacturer | Orion Motor Tech | | Material | Brass, Aluminum, PVC , Durable Plastic | | Material Type | Brass, Aluminum, PVC, Durable Plastic | | Model | 5864299654 | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | OMTDMG171 | | Thread Style | Npt | | Thread Type | Npt | | Unit Count | 1 Count | | Warranty Description | 1 year | ## Product Details - **Brand:** Orion Motor Tech - **Item Weight:** 7.9 Pounds - **Item dimensions L x W x H:** 12.6 x 11.81 x 3.74 inches - **Material:** Brass, Aluminum, PVC, Durable Plastic - **Thread Type:** Npt ## Images ![OMT 4 Way Automotive AC Diagnostic Manifold Gauge Set for R134a R410a R22 | Includes R134a Couplers Self-Sealing Piercing Can Taps R410a & 29° Adapter ; Solid Brass Build; Ideal for Auto Freon Recharge - Image 1](https://m.media-amazon.com/images/I/811zZcdjVKL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Does the can tap that is included work for R134a small cans?** A: Yes. It worked just fine. The only problem I had with it was getting the leftover amount in the second can to seal and not bleed out once I removed the hose. I took the protective vent cap off the yellow hose manifold air vent and screwed it on with some teflon tape on the thread to seal and it appears to be holding. JB **Q: Does the 134a can tap work for self-sealing cans or just piercing-style cans?** A: NO! Despite the vendor's claim, the tap supplied is for old-style piercing cans only. It does NOT work with self-sealing cans, only with piercing style. Yes I fully understand how it works - for this cam-locking adapter you have to partially unscrew the cam plate, fasten the cam to the can, screw the adapter in so it contacts the can top, un-attach the cam, screw the adapter maybe 1/2 turn further into the cam plate to make sure it will seal, re-attach the cam plate to the can, then screw the valve in. It would not operate the self-sealing can. Don't bother with the cheap $3 blue plastic can-top adapters, either. My closest parts store had a brass adapter from "sure-built" (Made in China, ~$7) that did work. Plan on spending that extra $7. ALSO plan on another $10 to replace the hose end gaskets with 1/4" Hose Gaskets e.g. https://www.amazon.com/Yellow-Jacket-Quick-Coupler-Gaskets/dp/B00E549YWW/ -these hoses come loose if you just look at them the wrong way. I HOPE the new gaskets will minimize that. Right now I have fluorescent dye leaked al over my compressor, which means I can't tell if there's a leak in the shaft seal until I clean all that shit off, and my compressor is hard to reach. **Q: Anyone was able to replace the seals on the female connections? They usually go bad quickly... Any particular brand?** A: Yup... replaced them as soon as I saw them. Amazon sells a couple of types-I have used the Green seals and their OK but I like to use the Yellow Jacket black seals. they seem to wear the best. You can also check your locale auto parts store, they should carry one of the name brands. Hope this helps. **Q: what is the trick to making the can tap work with self sealing cans? I could never get any freon to come out.** A: If you follow this and it still does not work-the tap may be defective. 1-Back off both the tap body and the valve. 2-Mount tap on can, and screw tap body down till it contacts the top of the can and tighten 1 turn. This should snug up the can and tap- if not - tighten a 1/2-1full turn more. 3-Now close the valve handle while holding the can and tap body. *NOTICE* Wear gloves and eye protection! FREON AT ROOM TEMP IS ABOUT MINUS -60.DEG AND WILL CAUSE FREEZE BURNS ON CONTACT!!! 4-Once you close the valve fully it should pierce the can top. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Solid quality for diy needs *by M***Y on June 10, 2024* The gauge block is very hefty and I was surprised by its weight. If it drops it will surely ding the fender easily. The fittings are of decent quality along with the heavy hoses. Valve knobs all are metal open close smoothly. The only thing I did not like there was no resistance when turning at all and made me think sealing at the stem would leak but all seemed ok. The hose end valves were heavy metal having resistance of a tight seal on the stems. The hoses were flexible but solid, I could not squeeze the hose to flatten at all. The plastic case holds everything while it’s not assembled but it will not accommodate a fully assembled with hoses device where you have to disassemble to store in the case. Even if you remove the foam cutouts you still can’t store it assembled, not big deal to hang it assembled but it can collect dust but don’t count on storing it assembled in the case. Tested it and all seemed to work. ### ⭐⭐⭐⭐⭐ Vacuum pump connection doesn't fit a vacuum pump. *by K***H on August 9, 2026* UPDATE: The kit came with adapters which allowed me to connect my vacuum pump! ----- Gauges seem to work fine, but the vacuum hose doesn't thread onto the standard vacuum pump connections. I have a brand new one and a 20 year old one. Same problem. I'm stuck with a mini split install that I can't complete. ### ⭐⭐⭐⭐ Great Guage kit, with poor can tap *by M***O on May 25, 2026* Overall, really like the guage kit, keep in mind its budget price. Everything works, and all is good, but if your kit has the older clamp type of can tap, toss it, and get screw-on type for automotive 134A cans, IF you need it for automotive work. I used this kit to self install an R410A based mini split. You'll also need some other tools to do that job, depending on what you buy, such as a vacuum pump, micron meter, flare tool, etc. Also used it recharge another home AC system, after it developed a leak. You'll need similar tools, and refrigerant, which maybe you can still find on the E Bay platform. Also recharged a couple of cars with R134a, and the kit helps to make sure you dont overpressure the High and Low side lines. Would have given it 5 starts, and maybe it deserves it, but the included can tap is garbage. Looks like the new kits now have the better Can adapters, and if so, its definitely worth the money for a homeowner, DIYer. By the way, you can find lots of instructional videos on Youtube to help you figure out how to use it. ## Frequently Bought Together - Orion Motor Tech 4 Way AC Gauge Set for R410a R22 R134a Refrigerant, 4 Valve Automotive AC Manifold with 5ft Hoses, R410a Adapters, Can Tap - Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/63841697-omt-4-way-automotive-ac-diagnostic-manifold-gauge-set-r134a](https://www.desertcart.tn/products/63841697-omt-4-way-automotive-ac-diagnostic-manifold-gauge-set-r134a) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-22*