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SKU:
NLT1B00929
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John Deere Thermostart Intake Heater CH14079 CH15593
$22.99
In Stock
$22.99
Sale price
$22.99
Regular price
This new aftermarket thermostart intake-heater plug replaces John Deere CH14079 and CH15593 for compatible 650, 750, 850, 900HC, 950, and 1050 tractors and selected Deere air-seeding equipment.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- John Deere 650, 750, 850 and 900HC tractors
- John Deere 950, 950HC and 1050 tractors
- John Deere 665 seeder
- John Deere 780 and 785 air drills using the same thermostart reference
Product Overview
A diesel that cranks longer and smokes heavily in cold weather may have an intake-heater problem after battery speed, compression, fuel quality, and injection timing are checked. This part is not an individual cylinder glow plug.
The thermostart unit heats the intake and, on the matching system, uses a small fuel supply to create a warm flame or heated charge for cold starting. Fuel and electrical operation must both be correct.
Match CH14079 or CH15593, thread, electrical terminal, fuel connection, intake-manifold location, tractor or seeder model, and serial number. Never substitute a dry glow plug into a fuel-fed thermostart port.
Key Features & Performance
- Intake-manifold cold-start heater
- Fuel-fed thermostart design for matching systems
- Single electrical terminal and threaded installation
- Replacement for an open heater or failed internal fuel valve
Replaces Part Numbers
- CH14079
- CH15593
- TE-4450
Common Uses
- Improving cold starts after confirming no intake heat
- Replacing a thermostart that leaks fuel into the intake
- Repairing a damaged electrical stud or fuel connection
Technical Specifications
- Product Type: Thermostart intake heater plug
- Cold-Start Method: Intake heat with fuel supply on matching systems
- Primary Tractors: John Deere 650-1050 applications
- Condition: New aftermarket replacement
Installation & Fitment
- Work on a cool engine and disconnect the battery
- Close the fuel feed and clean around the intake port
- Inspect the thermostart feed line and wiring
- Seal and tighten only as specified for the manifold
- Test the timed preheat cycle and check carefully for fuel leaks
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application that is not shown above. Model year, production date, serial number, engine or equipment specification, installed options, and previous repairs can change fitment. Match the original part, reference number, dimensions, connectors, mounting points, and product photos before purchase.
Frequently Asked Questions
Q: Is this a cylinder glow plug? A: No. It mounts in the intake system and supports cold starting through a thermostart process.
Q: Can a bad thermostart cause hard starting in warm weather? A: It mainly affects cold starting; compression, cranking speed, fuel delivery, and timing should be considered.
Q: How long should I energize it? A: Use the tractor or engine manual. Overheating the unit can cause damage or excess fuel in the intake.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: John Deere CH14079 thermostart, CH15593 intake heater replacement, John Deere 750 cold start heater, 1050 tractor hard cold starting, TE-4450 thermostart plug
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.