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AutoMeter 5451 Pro-Comp Mechanical Transmission Temperature Gauge

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#1825451

AutoMeter 5451 Pro-Comp Mechanical Transmission Temperature Gauge

Traditional incandescent lighting illuminates around the perimeter of the dial
Liquid dampened movement provides smooth pointer movement and extended service life in harsh environment applications.
Liquid filled design for superior resistance to shock, vibration, and the elements.

$165.99

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Product Summary

Universal Fit, 140-280° F Gauge Range, Black

Traditional incandescent lighting illuminates around the perimeter of the dial
Liquid dampened movement provides smooth pointer movement and extended service life in harsh environment applications.
Liquid filled design for superior resistance to shock, vibration, and the elements.
AutoMeter’s race proven mechanical instruments provide trusted accuracy while being simple to install
No electrical system required for gauge operation - compatible with every street or race vehicle

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Key Specs

MFG. Part #	5451
Overall Diameter	2-5/8
Gauge Range	140-280° F
Gauge Type	Mechanical
Gauge Face Color	Black

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AutoMeter 5451 Details

Transmission fluid temperature is the single biggest contributing factor to the lifespan of your automatic transmission. Having an accurate, realtime measurement allows you to know when to downshift or when to take your foot out of it. Whether you're towing or simply trying to harness the power of a built or boosted motor, Auto Meter's Mechanical Trans Temp Gauge will give you the most accurate possible measurement for the exact temp of your trans fluid. An 8' Capillary Tube with a 1/2" NPT mounting nut is included to be installed in your transmission pan. An optional trans cooler line manifold is available for another easy installation option.

Includes bulb and socket assembly with red and green bulb covers
Includes 8ft. capillary tubing
Includes 1/2" NPT adapter/fitting.
Includes gauge mounting hardware and installation instructions

Ships with the following AutoMeter products:

Adapters/Fittings:  1/2"" NPT adapter/fitting.
Tubing:  10.5 ft. Capillary Tube
Bulb & Socket:  3220
Light Covers:  Red 3214 & Green 3215
Mounting Hardware:  3245

Ships with the following AutoMeter products:

Adapters/Fittings:  1/2"" NPT adapter/fitting.
Tubing:  10.5 ft. Capillary Tube
Bulb & Socket:  3220
Light Covers:  Red 3214 & Green 3215
Mounting Hardware:  3245

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Installation Instructions (PDF)

Rebates

AutoMeter Hod Holidays Up To $150 MIR Select Parts

Purchase $100 or more in eligible AutoMeter products between November 1 and December 31, 2026 and receive a mail-in rebate ranging from $10 to $150, depending on your total qualifying purchase amount. Eligible brands include AutoMeter, Auto Gage, Dedenbear, Marine, Pro-Cycle, Spek-Pro, STACK, and AutoMeter Test Equipment products. To qualify, submit a completed rebate form, your original sales receipt or invoice, and the original UPC/barcode labels cut from each product box. All rebate requests must be postmarked by January 31, 2027. One rebate per household per rebate period; offer cannot be combined with other promotions and is valid only on new qualifying purchases. Incomplete, late, illegible, or non-compliant submissions will be rejected. Rebate requests are subject to verification and approval by AutoMeter Products, Inc., valid for U.S. customers only, and may take up to 12 weeks to process.

Guides & Documents

Transmission Temperature Gauges Installation Instructions (1825451)

AutoMeter 5451 Specifications

KEY SPECS
MFG. Part #	5451
Brand	AutoMeter
Overall Diameter	2-5/8
Gauge Range	140-280° F
Gauge Type	Mechanical
Gauge Face Color	Black
Bezel Finish	Brushed Aluminum

GENERAL
Needle Color	Fluorescent Red
Lighting Type	Incandescent
Includes Tubing	Yes
Includes Mounting Bracket(s)	Yes
Sold in Quantity	Each
GTIN Code	046074054518

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