MACK 7MT320 Air Nos Kit Water Pressure Gauge

( Manufacturer Part Number: 7MT320 ), ( Part Type: Pressure Gauge )

Review MACK Air Pressure Gauge Kit Nos

The **Mack MT320 Air Pressure Gauge Kit (NOS)** is a meticulously preserved, factory-new (never opened or used) assembly designed to provide precise and reliable monitoring of air pressure within Mack heavy-duty truck systems, particularly in the brake, suspension, and air ride applications. This high-quality kit includes a robust **MT320 air pressure gauge**, known for its durability and accuracy, paired with essential components that ensure seamless integration into Mack s air brake or suspension systems. The gauge itself features a **durable, anodized aluminum housing** that resists corrosion and wear, while its **clear, easy-to-read dial** is calibrated to deliver real-time pressure readings in PSI (pounds per square inch), typically ranging from 0 to 100 PSI, though some variations may extend up to 150 PSI for heavy-duty applications. The gauge s **mechanical movement** is designed to withstand the harsh environments of commercial trucking, including exposure to temperature fluctuations, vibration, and moisture, ensuring long-term reliability.

Complementing the gauge is a **complete set of mounting hardware**, including a **gauge sender unit (transmitter)**, which interfaces directly with the truck s air system to provide accurate pressure data. The sender unit is equipped with a **sealed diaphragm or piston mechanism** that converts air pressure into a proportional electrical signal, which the gauge then translates into a visual reading. The kit also includes **high-quality hoses, fittings, and connectors** designed to match Mack s standard air system components, ensuring a secure and leak-free connection. Additionally, the assembly may come with **adjustable mounting brackets or clamps**, allowing for flexible installation on the truck s dashboard, control panel, or other designated locations where visibility is optimal. For added convenience, some versions of this kit include **quick-connect fittings**, simplifying the installation process without the need for specialized tools.

Beyond its functional excellence, the **MT320 gauge kit** is engineered with precision to meet or exceed industry standards, including those set by the **SAE (Society of Automotive Engineers)** and **DOT (Department of Transportation)** for commercial vehicle safety. Its **factory-sealed condition** guarantees that all components are free from wear, ensuring that the gauge will perform as intended from the moment of installation. Whether used in a **class 8 truck, bus, or heavy-duty service vehicle**, this kit is an indispensable tool for fleet managers, mechanics, and drivers who prioritize safety, efficiency, and reliability. With its **durable construction, accurate readings, and seamless integration**, the Mack MT320 Air Pressure Gauge Kit (NOS) stands as a testament to Mack s commitment to quality and performance in the demanding world of commercial transportation.

### **Pros and Cons of buying a Mack 7MT320 Air Pressure Gauge Kit (NOS)**

1. **Compatibility** The 7MT320 is designed specifically for Mack engines, ensuring a precise fit and proper functionality without modifications.

2. **New Old Stock (NOS) Condition** Being NOS means the gauge kit is unused and in original packaging, reducing the risk of wear, damage, or failure from prior use.

3. **Reliability** Mack components are known for durability, and a properly installed air pressure gauge system helps monitor critical engine functions, preventing costly failures.

4. **Easy Installation** The kit includes all necessary components (gauge, wiring harness, mounting hardware, etc.), simplifying the installation process for those with basic mechanical skills.

5. **Diagnostic Value** Accurate air pressure readings help detect issues like leaks, clogged filters, or failing compressors early, improving engine performance and longevity.

6. **Resale Value** A properly maintained truck with original or high-quality aftermarket parts retains better resale value.

7. **Warranty Coverage** Some NOS suppliers offer warranties, providing peace of mind against defects.

1. **Cost** NOS parts are typically more expensive than used or aftermarket alternatives, which may not be justified for budget-conscious buyers.

2. **Limited Availability** Finding a reputable NOS supplier can be challenging, and stock may be limited, leading to longer wait times.

3. **Potential Overkill for Some Applications** If the truck is older or not heavily used, the expense of a new gauge kit may not be necessary.

4. **Installation Complexity** While the kit is designed for ease of use, improper installation (e.g., incorrect wiring or gauge placement) could lead to inaccurate readings or damage.

5. **Compatibility Risks with Modifications** If the engine has been heavily modified (e.g., turbocharged, aftermarket air systems), the stock gauge may not provide accurate readings.

6. **Maintenance Requirements** Like any gauge, this system will need periodic checks to ensure calibration and functionality over time.

---

### **Conclusion**

The **Mack 7MT320 Air Pressure Gauge Kit (NOS)** is a high-quality, reliable choice for owners of Mack engines who prioritize accuracy, longevity, and diagnostic capability. Its compatibility with original equipment and unused condition make it a strong investment for those who want to avoid potential issues from used or lower-quality parts. However, the higher cost and potential overkill for less demanding applications may deter some buyers.

For **truck owners who value precision, resale value, and long-term reliability**, this kit is a worthwhile purchase. For **budget-conscious buyers or those with less critical needs**, exploring aftermarket alternatives or used NOS options could be more practical.

### **Recommendation**

If you are restoring or maintaining a Mack engine and can justify the investment, **proceed with purchasing the 7MT320 NOS kit** especially if you plan to keep the truck long-term. Ensure proper installation by following Mack s guidelines or consulting a professional. If cost is a concern, verify whether a used NOS kit or a reputable aftermarket equivalent (e.g., from a trusted brand like **AEM or Snap-on**) meets your needs before committing. Always prioritize quality over price when it comes to critical engine components.

Details:

Mack 7MT320 Air Pressure Gauge Kit NOS. All parts are in stock and ready to ship. Pictures: Thumbnails. Items are shipped using USPS, UPS, and FedEx.

If the original package is included it may show signs of wear. Air Pressure Gauge Kit is new and in excellent condition, original packaging.

part #: 7mt320 prices

• $99.99-$420.99

specifications boosttempgauges:

• for makes: Mack
• mpn: 7mt320
• part type: Pressure Gauge

payments boosttempgauges:

• wallet: Apple-pay
• other
• credit card: Visa

general boosttempgauges:

• condition: New
• Interior Parts Accessories > Gauges > Individual Gauges

returns boosttempgauges:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

seller boosttempgauges:

• # reviews: 128602
• city: Ashaway, Rhode Island
• rating: 99.9%

shipping boosttempgauges:

• service: Standard
• class: Standard
• cost: $0.00
• transit: 4-10 Days
• type: Fixed

offer boosttempgauges:

• quantity: 2
• sold: 0
• best offers: True
• options: Ship-to-home
• availability: In Stock
• started: March 1, 2026

Mack 7MT320 Is Similar To:

• temperature gauge 3mt246 mack (38.8% similar) Good luck, and happy buying. Part number 3MT426. Price for all four is 90, free shipping. You never know what you might find. Listing includes mack temp gauge shown in its original packaging. I have 4 total, only selling single or altogether. Never been used before...(August 10th, 2015)
• 3mt323ap2 Guage Mack Water Temperature (31.6% similar) ...(March 18th, 2015)
• mack truck temperature water nos 3mt35ap2 gauge-part (37.8% similar) Up for offer vintage mack truck water temperature gauge part 3MT35AP2 nos...(August 8th, 2015)
• F3ht-10883-ba Ford Nos Oem Water Temp Gauge Isspro Kenworth Mack Peterbilt (25% similar) Warranty no warranty...(December 23rd, 2015)
• Gauge 3mt35a 12v New 3mt35a Mack Water Temperature (20.5% similar) Please refer to photos any questions about this gauge, please...(November 12th, 2015)
• Pn-3mt226 3mt226 Mack Temperature Gauge In Original Box (38.7% similar) An original mack temperature gauge in it's original box. Original box is in good condition with one small bump on one corner. I am always glad to combine shipping. Gauge reads water temperature appears to be unused in like new condition. There are a couple of small spots on the gauge ring that I am ...(October 29th, 2016)
• Pai 804370 Engine Oil Pressure Gauge Mechanical Mack Ch Cl Cx Model Ap For (43.9% similar) 804370 engine oil pressure gauge mechanical mack ch / cl CZ model AP for pair: part number: manufacturer: pair. Designed specifically for trucks, trailers, and buses. Made of high-quality components for durability, reliability, and performance. Manufactured following strict OE standards to work ...(January 14th, 2025)
• Mack 25111995 Fuel Level Gauge (44.1% similar) Made of high-quality components for durability, reliability, and performance. Engineered using the latest technology to ensure product lasts longer in service. Designed specifically for trucks, trailers, and buses. mack 25111995 fuel level gauge: part number: manufacturer. Engineered with a factory...(January 15th, 2025)
• Pai 803470 Fuel Level Gauge Mack Ch cl cx Models Application 3x Round Pin For (29.6% similar) Engineered using the latest technology to ensure product lasts longer in service. Manufactured following strict OE standards to work like the original component. Engineered with a factory-like design for effortless installation, ensuring perfect match your vehicle. Designed specifically for trucks, ...(April 11th, 2025)
• Mack 1mt365 Fits Gauge Fuel Pressure (51.4% similar) Designed specifically for trucks, trailers, and buses. Engineered using the latest technology to ensure product lasts longer in service. Engineered with a factory-like design for effortless installation, ensuring perfect match your vehicle. Manufactured following strict OE standards to work like the...(June 9th, 2025)
• Mack 21814287 Fits Gauge (48.4% similar) Engineered with a factory-like design for effortless installation, ensuring perfect match your vehicle. Designed specifically for trucks, trailers, and buses. Made of high-quality components for durability, reliability, and performance. fits mack 21814287 gauge: part number: manufacturer. ...(June 10th, 2025)