Universal Replacement Gauge 68 mm PSI/°C R410a, R22, R404a - Low image
Universal Replacement Gauge 68 mm PSI/°C R410a, R22, R404a image 1
Two pressure gauges with text about HCPRO replacement gauges for HVAC systems on a dark background.
Replacement Gauges 68 mm PSI/°C R410a, R22, R404a
Replacement Gauges 68 mm PSI/°C R410a, R22, R404a
Replacement Gauges 68 mm PSI/°C R410a, R22, R404a
Replacement Gauges 68 mm PSI/°C R410a, R22, R404a
Replacement Gauges 68 mm PSI/°C R410a, R22, R404a
Replacement Gauges 68 mm PSI/°C R410a, R22, R404a
Universal Replacement Gauge 68 mm PSI/°C R410a, R22, R404a - High image
Black Knight Series logo with a helmeted figure on a white background
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Black Knight
Replacement Gauge · 68mm Compact

BK-RG68C68mm Compact Replacement Gauge · °C/PSI · HVAC HFC

SKU · 22-0041MPN · HCG68-4142SET
68mm CompactAssembled & Tested in USAClass 1.61/4″ SAEShock-Proof CoverR-410AR-22R-404A°C/PSI
$16.85
In stock· ships same business day from Miami
Direct from the manufacturer — Miami HQ, full warranty & tech support included.
Pressure Side
Pressure Side: Low
In stock, ready to ship
Assembled
Tested in Miami
Standard
OEM Spec
Ships
1–2 Days
  • Field-tested by working HVAC technicians
  • Free returns within 30 days
  • Direct manufacturer support — Miami HQ
  • ORDER IN THE NEXT — AND IT SHIPS TODAY FROM MIAMI
1.6CLASS
Gauge Accuracy

Class 1.6 calibrated accuracy (±1.6% of full scale) on every replacement gauge — pro service tier, the same accuracy class as our full Black Knight manifold lineup

1/4SAE
Drop-In Replacement

Standard 1/4″ SAE rear connection — fits all Black Knight manifolds AND most professional HVAC manifolds on the market. Plug-and-play replacement.

SHOCKPROOF
Rubber Protective Cover

Shock-proof rubber cover protects against drops, impact, and shop bench abuse — keeps your calibration intact when the gauge takes a hit

USAASSEMBLED
Assembled & Tested in USA

Every Black Knight replacement gauge is assembled and tested in Miami to OEM-spec quality control — the same calibration standard as the gauges shipping in our full manifold sets

Why Black Knight

Class 1.6 calibrated.

Plug-and-play.

Pro-grade replacement.

HCPRO Black Knight replacement gauges are the same Class 1.6 calibrated analog gauges that ship in our full manifold sets — pre-calibrated per refrigerant family, shock-proof rubber cover, standard 1/4″ SAE rear connection. Drop-in compatible with every Black Knight manifold and most professional HVAC manifolds on the market.

Class 1.6 calibrated accuracy

Every Black Knight replacement gauge ships pre-calibrated to Class 1.6 accuracy — ±1.6% of full scale across the operating range. This is the professional service tier (Class 2.5 is consumer-grade, Class 1.0 is lab-grade). Class 1.6 gives you the precision needed for proper subcool / superheat charging without paying for lab-grade gauges.

Plug-and-play 1/4″ SAE replacement

Standard 1/4″ SAE rear connection — the universal pro HVAC manifold fitting. Drop-in compatible with every Black Knight manifold model AND most professional 80mm / 68mm HVAC manifolds on the market (Yellow Jacket, Robinair, CPS, etc.). No special tools, no calibration step, no field adjustment. Replace a damaged gauge in under 5 minutes and get the manifold back on the truck.

Shock-proof rubber cover

Shock-proof rubber cover wraps every Black Knight replacement gauge — protects against drops, bench impacts, and the rough handling that retires consumer-tier gauges fast. Same protective construction as the gauges shipping in our full Black Knight manifold sets. The cover also acts as a non-slip grip when threading the gauge into a manifold body.

Full Product Description

The HCPRO Black Knight BK-RG68C is a 68 mm replacement manifold gauge calibrated for R-410A, R-22 and R-404A, with a dual PSI / °C scale.

Key features

  • 68 mm dial sized for compact and economy manifold sets
  • Dual-scale PSI and °C with R-410A, R-22 and R-404A temperature references
  • Available as a low-side gauge, high-side gauge, or matched set
  • Color-coded bezel and shock-resistant build for daily service

A direct drop-in to bring a tired manifold back to accurate readings.

Technical specifications

Replacement gauge specs that match the manifold it goes into.

Black Knight replacement gauge — Class 1.6 calibrated, shock-proof rubber cover, standard 1/4″ SAE rear connection. Drop-in compatible with all Black Knight manifolds and most professional HVAC manifold brands. Pre-calibrated face varies per SKU — see hero pills for specific refrigerant and scale. Assembled and tested in Miami, FL.

Model family
Replacement Gauge — Black Knight SeriesPre-calibrated drop-in replacement gauge for Black Knight manifolds and most professional HVAC manifolds
Construction
Metal case, glass face, shock-proof rubber coverPro-grade build for daily shop use — drops, bench impacts, temperature swings
Gauge size
68mm or 80mm (varies per SKU)See hero pills or model designation for specific size — 68mm compact for economy/value applications, 80mm full-face for pro
Compatible refrigerants
Varies per SKU — pre-calibrated faceSee hero pills or product title for specific refrigerant calibration — HVAC HFC / Refrigeration / Hydrocarbon / A2L / Mobile A/C variants available
Scale
Dual-scale per SKU (°F/PSI or °C/PSI or °F+°C/PSI)Check hero pills for the specific scale — dual scale faces show both temp + pressure for direct cross-reference
Accuracy class
Class 1.6 (±1.6% of full scale)Professional service tier — same accuracy class as gauges shipping in full Black Knight manifold sets
Rear connection
1/4″ SAE male threadStandard professional HVAC manifold fitting — fits all Black Knight manifolds and most pro brands
Cover
Shock-proof rubberWraps the case for drop protection + non-slip grip when threading into a manifold body
Drop-in compatible
All Black Knight manifolds + most pro HVAC brandsYellow Jacket, Robinair, CPS, and other professional 1/4″ SAE manifolds
Application
Pro replacement / spare-part inventoryReplace a damaged or out-of-calibration gauge, or keep one on the truck as a service-call backup
Variants
High / Low / SetSome SKUs offer High-side only, Low-side only, or matched Set — select the configuration that matches your replacement need
Assembled in
Miami, FL — USAAssembled and tested to OEM-spec quality control at our Miami facility
Compliance
SAE J2196, J2888Meets industry standards for refrigerant service equipment
Warranty
1-year limitedCovers manufacturing defects under normal professional use
In the box

Calibrated replacement gauge, ready to install.

Two pressure gauges with text about HCPRO replacement gauges for HVAC systems on a dark background.
One Class 1.6 calibrated replacement gaugePer SKU model — 68mm or 80mm size, °F/°C/dual scale, refrigerant-specific calibrated face, shock-proof rubber cover
Pre-calibrated for the listed refrigerant setShips ready to install — no field calibration required. See product title and hero pills for the specific refrigerant calibration.
Standard 1/4″ SAE rear connectionPlug-and-play fitment to all Black Knight manifolds and most professional HVAC manifolds. No special tools required.
Black Knight installation insertGauge replacement procedure, calibration verification check, manifold fitment reference
Need a different config?

Find your Black Knight.

Filter by what you service — refrigerant, hose length, hose tier. Switch to Gauge Replacement to find just the calibrated 80mm or 68mm replacements for your existing manifold.

Filter the lineup
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Matching tools

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Customer reviews

What working techs say after putting it on the truck.

12,000+ HVAC pros served
4.9★ Average rating
94% Repeat buyers

Replace this with a real customer quote — what manifold the gauge went into, what refrigerant, how the install went, and whether the calibration matched the original out of the box.

Marcus T.HVAC TECH · MIAMI, FL
On HCPRO Black Knight Replacement Gauge

Replace this with a real customer quote — what manifold the gauge went into, what refrigerant, how the install went, and whether the calibration matched the original out of the box.

Jorge R.REFRIGERATION CONTRACTOR · ATLANTA, GA
On HCPRO Black Knight Replacement Gauge

Replace this with a real customer quote — what manifold the gauge went into, what refrigerant, how the install went, and whether the calibration matched the original out of the box.

Derrick W.COMMERCIAL HVAC · PHOENIX, AZ
On HCPRO Black Knight Replacement Gauge
Used it on a job?

Share your shop notes

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Tools that pair with the BK-RG68C.

HC-E2V1C3P Brass 2-Way Manifold Gauge Set R410a, R22, R404a °C PSI, 3-1/8" Gauges, (3) 36” Standard ¼” Premium Black Hoses Rated 4000 PSI Burst, 800 PSI image 1
22-0036

2-Way Brass Manifold Gauge Set R410a/R22/R404a + 3ft Hoses 800 PSI

$71.30
Universal Replacement Gauge 80 mm PSI/°F R410a, R22, R404a, R134a image 3
22-0046

Replacement Gauges 80 mm PSI/°F R410a, R22, R404a, R134a

$21.46
Universal Replacement Gauge 80 mm PSI/°C R410a, R22, R404a, R134a image 3
22-0043

Replacement Gauge 80 mm PSI/°C for R410a, R22, R404a, R134a

$21.25
HCEC-6S ECO SERIES 6CFM Single-Stage 1/2HP Vacuum pump, Single Voltage 115V/60HZ image 8
22-0009

HCEC-6S 6 CFM HVAC Vacuum Pump — Single Stage, 1/2 HP, 115V

$164.90
HCLSK2 HVAC-R High Performance and Refrigerant Leak Sealant with 45° Swivel Adapter image 4
02-0076-2

HCLSK2 2oz HVAC Leak Sealant with 45° Swivel Adapter

$64.53
Common questions

Answers from the warehouse floor.

Still stuck? Call our techs at 305-720-0044.

Does HCPRO warranty the products?

Yes — every HCPRO Black Knight product ships with a 1-year limited warranty against manufacturing defects under normal professional use. We'll replace the manifold, gauges, or hoses if they fail to meet stated specs. See our full warranty terms.

Which Black Knight manifold should I pick?

Use the tool finder above — toggle to Gauge Replacement and filter by the refrigerant calibration you need (HVAC HFC / Refrigeration / Hydrocarbon / A2L / Mobile A/C) and gauge size (68mm or 80mm). Each gauge's refrigerant scope and scale show in the hero pills on its product page.

Will this gauge fit my manifold?

If your manifold uses a standard 1/4″ SAE rear connection for the gauges (which most professional HVAC manifolds do — including all Black Knight models, Yellow Jacket, Robinair, CPS, and others), yes. Check the gauge size first: 68mm goes in compact / economy manifolds, 80mm (3-1/8″) goes in the full-face pro manifolds. Pick the size that matches the gauge you're replacing.

What does "Class 1.6" gauge accuracy mean?

Class 1.6 is the European Standard for analog pressure gauge accuracy — readings are within ±1.6% of full scale across the operating range. For a 500 PSI gauge, that's ±8 PSI. This is the professional service tier (Class 2.5 is consumer-grade, Class 1.0 is lab-grade). Class 1.6 gives you the precision needed for proper subcool / superheat charging without the cost of lab-grade gauges.

What refrigerants is THIS replacement gauge calibrated for?

Each Black Knight replacement gauge is pre-calibrated for a specific refrigerant family — check the hero pills at the top of this page or the product title for the specific scope. Black Knight gauge replacements cover: HVAC HFC (R-410A / R-22 / R-404A / R-134a), Commercial Refrigeration (R-134a / R-404A / R-407C / R-507), Hydrocarbon (R-32 / R-290 / R-600), A2L Transition (R-32 / R-410A / R-454B), and Mobile A/C (R-1234YF).

Can I use this gauge on a non-Black-Knight manifold?

Yes — the standard 1/4″ SAE rear connection fits most professional HVAC manifolds (Yellow Jacket, Robinair, CPS, Imperial, and others) as long as they use the same fitting standard. Class 1.6 accuracy is the pro service tier, so you may actually upgrade an older manifold's gauge accuracy by installing a Black Knight replacement. Verify the gauge size (68mm or 80mm) matches your manifold before ordering.

How do I know if my gauge needs replacement?

Signs of a failed or out-of-calibration gauge: (1) needle reads non-zero at atmospheric pressure (with hoses disconnected), (2) face fogs from internal moisture, (3) needle sticks or jumps under steady pressure, (4) rubber cover degrades and stops protecting the case, (5) readings disagree with a known-good gauge by more than ±1.6% on the same pressure source. Any one of these = time to replace.

Can I return an unused gauge?

Yes — free returns within 30 days for unused replacement gauges in original packaging. Once a gauge has been threaded into a manifold body, it's considered used and not eligible for return (we can't resell an installed gauge). Read our full return policy.

Do you offer bulk pricing on replacement gauges?

Yes — trade pricing on this page, plus volume discounts for shops keeping replacement gauge inventory across multiple manifold sets. Email hcproproductsusa@gmail.com with your gauge mix and quantities and we'll send a custom quote within 24 hours.