STEWART WARNER 360HY-1 Oil Hotrod Ratrod Flathead Boat Water Pressure Gauge 1/16

( Brand: Stewart Warner ), ( Manufacturer Part Number: 360HY-1 ), ( Unit Of Measure: Psi ), ( Needle Color: White ), ( Type: Fuel Pressure Gauge ), ( Display Type: Analog ), ( Color: Black ), ( Item Diameter: See Photos ), ( Style: Vintage ), ( Material: Chrome ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review STEWART WARNER Vintage Amps Oil Pressure Gauge 1/16 Hotrod Ratrod Flathead Boat

The **Stewart-Warner 360HY-1 Oil Pressure Gauge** is a rugged, high-performance instrument meticulously designed for enthusiasts and professionals who demand precision and reliability in their engines, whether they re revving up a vintage flathead V8, a hotrod, a Rat Rod, or a classic boat. Built with a durable brass case and a robust 1/16-inch mounting base, this gauge is engineered to withstand the demands of high-stress applications, ensuring accurate readings even under extreme conditions. The **360HY-1** features a **100 PSI range**, making it ideal for engines where oil pressure monitoring is critical whether it s a high-revving street rod, a powerful marine engine, or a restored flathead that s been modified for modern performance. Its **hot-wire sender** provides instant, responsive feedback, allowing operators to track oil pressure fluctuations in real time, which is essential for preventing catastrophic engine failure due to low oil pressure or excessive wear.

What sets this gauge apart is its **versatile compatibility** it seamlessly integrates with a wide range of vehicles and machinery, from classic American muscle cars to off-roaders and even older marine engines where stock gauges may be unreliable or nonexistent. The **clear, easy-to-read dial** features bold, high-contrast markings, ensuring visibility even in bright sunlight or low-light conditions, while the **durable brass construction** resists corrosion, making it a long-lasting addition to any engine bay. Whether installed in a **flathead Ford, Chevy, or Chrysler**, or mounted on a **boat s dashboard for marine applications**, this gauge delivers the confidence of knowing your engine s lubrication system is operating within safe parameters.

For hot rod and Rat Rod builders, the **360HY-1** is particularly valuable its compact yet sturdy design allows for easy installation in tight spaces, and its **hot-wire sender** ensures quick response times, which is crucial for engines with modified oil systems or high-performance upgrades. Marine enthusiasts will appreciate its **ruggedness**, as it can handle the vibrations and humidity of boat engines without losing accuracy. Overall, the Stewart-Warner 360HY-1 is more than just a gauge it s a **vital diagnostic tool** for anyone who takes their engine s health seriously, offering a perfect blend of **durability, precision, and adaptability** for both classic and modified applications.

**Pros and Cons of buying a Stewart-Warner 360HY-1 Oil Pressure Gauge (1/16" Hotrod/Rat Rod/Flathead/Boat)**

### **Pros**

1. **Compatibility** This gauge is designed specifically for older engines, including Hotrods, Rat Rods, Flatheads, and small boat engines. Its 1/16" mounting size makes it suitable for tight or retrofitted applications where standard gauges may not fit.

2. **Durability** Stewart-Warner is a well-known brand with a reputation for producing reliable automotive and marine gauges. The 360HY-1 is built to withstand vibration and temperature fluctuations, which are common in high-performance or older engines.

3. **Accurate Readings** Oil pressure is critical for engine health, and this gauge provides a clear, analog reading that helps monitor pressure levels in real time. This is especially useful for modified or high-performance engines where oil flow may be less predictable.

4. **Versatility** The gauge can be used in various applications beyond just Hotrods, including small boats, classic cars, and even some industrial machinery, making it a flexible tool for enthusiasts.

5. **Easy Installation** With a 1/16" mounting hole, it can be installed in tight spaces where larger gauges wouldn t fit. The wiring and mounting hardware are typically straightforward, though some basic soldering or wiring knowledge may be required for proper installation.

6. **Affordable** Compared to some high-end digital gauges or specialized pressure switches, this analog gauge is reasonably priced, offering good value for its function.

7. **Aesthetic Appeal** For classic car and Hotrod enthusiasts, the vintage-style analog gauge adds to the retro look of the dashboard, complementing the overall build aesthetic.

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### **Cons**

1. **Analog Limitations** Unlike digital gauges, this is an analog (needle-style) gauge, which means readings require interpretation. In low-light conditions or at a glance, it may be harder to quickly assess pressure levels compared to a digital display.

2. **Potential for Wear Over Time** Analog gauges can suffer from needle drift or dial misalignment over time, requiring occasional recalibration or replacement. The internal components may also degrade if exposed to extreme conditions.

3. **Limited Range** The gauge s pressure range may not cover all possible scenarios, especially in high-performance or heavily modified engines where oil pressure can spike or drop significantly. Users may need to verify if the gauge s range (e.g., 0 100 PSI) aligns with their engine s requirements.

4. **Wiring and Installation Complexity** While the gauge itself is simple, wiring it correctly especially in a live electrical system can be tricky. Incorrect wiring (e.g., reversed polarity) can damage the gauge or create safety hazards. Some users may need to consult wiring diagrams or seek assistance.

5. **No Backlit Display** Unlike some modern gauges, this one lacks a backlit display, which can make readings difficult in dark or poorly lit environments (e.g., night driving in a classic car).

6. **Replacement Parts Availability** While Stewart-Warner is a reputable brand, finding replacement parts (e.g., needles, dials, or wiring harnesses) may be challenging over time, especially for older models.

7. **Not Waterproof** Unless specifically rated for marine use, this gauge may not be fully waterproof. In boat applications, it should be installed in a protected location to avoid moisture damage.

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### **Conclusion**

The Stewart-Warner 360HY-1 oil pressure gauge is a solid choice for enthusiasts working on older engines, Hotrods, Rat Rods, Flatheads, or small boats. Its compatibility with 1/16" mounting, durability, and affordability make it a practical tool for monitoring oil pressure in applications where standard gauges won t fit. The analog design, while less convenient than digital alternatives, offers a reliable and visually appealing way to track pressure levels.

However, its limitations such as the need for occasional calibration, potential wiring challenges, and lack of advanced features mean it may not be ideal for high-performance or modern engines where digital gauges or more sophisticated monitoring systems are preferred. For classic car and Hotrod builders, this gauge strikes a good balance between functionality and nostalgia.

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### **Recommendation**

If you re working on a **Hotrod, Rat Rod, Flathead engine, or a small boat** and need a simple, analog oil pressure gauge for a 1/16" installation, the Stewart-Warner 360HY-1 is a **strong, cost-effective option**. It s particularly well-suited for projects where aesthetics and retro compatibility matter, and where you re comfortable with basic wiring or have access to help with installation.

For **high-performance engines, modern vehicles, or applications requiring digital precision**, consider upgrading to a digital oil pressure gauge or a more advanced analog gauge with backlighting or wider pressure ranges. Additionally, if you re unsure about wiring, consult a professional or use a pre-wired gauge kit to ensure safe and accurate installation.

Overall, this gauge is **highly recommended for its niche but valuable applications**, provided you account for its analog limitations and potential installation challenges.

Details:

Made in the USA, this gauge is a unique and authentic addition to any flathead boat or vintage car restoration project. The Vintage AMPS OIL Pressure Gauge by Stewart Warner is a classic fuel pressure gauge designed for hotrod and ratrod vehicles with 2 1/16 inch diameter. The gauge features a white needle on black analog face, with chrome material finish that exudes vintage style.

part #: 360hy1 prices

• $22.00-$145.50

specifications boosttempgauges:

• brand: Stewart Warner
• mpn: 360hy-1
• unit of measure: Psi
• needle color: White
• type: Fuel Pressure Gauge
• display type: Analog
• color: Black
• item diameter: See Photos
• style: Vintage
• material: Chrome
• vintage part: Yes
• country of origin: United States

seller boosttempgauges:

• rating: 99.8%
• city: Reading, Pennsylvania
• # reviews: 3592

general boosttempgauges:

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

payments boosttempgauges:

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

returns boosttempgauges:

• policy: No Returns

shipping boosttempgauges:

• transit: 9-12 Days
• service: USPS Ground Advantage
• cost: $9.00
• carrier: USPS
• type: Fixed
• class: Standard

offer boosttempgauges:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 1
• started: March 14, 2026

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