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AutoMeter 3649 Sport-Comp II Air-Core Transmission Temp. Gauge

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#1823649

AutoMeter 3649 Sport-Comp II Air-Core Transmission Temp. Gauge

Modern white LED through-the-dial lighting provides clear visibility during nighttime use
12 and 16 volt compatible, well-suited with nearly every street car or race car electrical system
Gauge kit includes 1/8” NPT temperature sender, 3/8” and 1/2" NPT adapters, mounting hardware, and detailed instructions for installation

$98.99

/each

Factory Shipped

Quantity

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Product Summary

Universal Fit, 100-250° F Gauge Range, Black

Modern white LED through-the-dial lighting provides clear visibility during nighttime use
12 and 16 volt compatible, well-suited with nearly every street car or race car electrical system
Gauge kit includes 1/8” NPT temperature sender, 3/8” and 1/2" NPT adapters, mounting hardware, and detailed instructions for installation
AutoMeter’s race proven air-core electric instruments provide quick and accurate readings while keeping hazardous fluids outside of the vehicle

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Key Specs

MFG. Part #	3649
Overall Diameter	2-1/16
Gauge Range	100-250° F
Gauge Face Color	Black
Bezel Finish	Brushed Aluminum

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AutoMeter 3649 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 Trans Temp Gauge will give you the most accurate possible measurement for the exact temp of your trans fluid. A single wire 1/8" NPT temperature sender included to be installed in your transmission, transmission pan or with an optional transmission cooler line manifold is available for easy installation into a transmission cooler hard line.

Features Hi-Def through-the-dial white LED lighting
Includes 1/8" NPT Sender and 3/8" NPT and 1/2" NPT adapter/fittings
Features Air-Core meter movement
Includes gauge mounting hardware and installation instructions

Ships with the following AutoMeter products:

Sending Unit(s):  2258
Adapters/Fittings:  3/8" NPT and 1/2" NPT adapter fittings
Mounting Hardware:  2230

Ships with the following AutoMeter products:

Sending Unit(s):  2258
Adapters/Fittings:  3/8" NPT and 1/2" NPT adapter fittings
Mounting Hardware:  2230

Charts

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 (1823649)

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

AutoMeter 3649 Specifications

KEY SPECS
MFG. Part #	3649
Brand	AutoMeter
Overall Diameter	2-1/16
Gauge Range	100-250° F
Gauge Face Color	Black
Bezel Finish	Brushed Aluminum
Sending Unit Included	Yes

GENERAL
Needle Color	Fluorescent Red
Lighting Type	LED
Includes Mounting Bracket(s)	Yes
Sold in Quantity	Each
GTIN Code	046074036491

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