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SKU:
NLT2F03133
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4-Pack Glow Plugs 3974953 for Bobcat 643 645 743 1600 Kubota Engines
$56.99
In Stock
$56.99
Sale price
$56.99
Regular price
This four-piece aftermarket glow plug set replaces Bobcat 3974953 on compatible 643, 645, 743, 743B, and 1600 machines with Kubota diesel engines.
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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
- Bobcat 643 skid steer
- Bobcat 645 skid steer
- Bobcat 743 skid steer
- Bobcat 743B skid steer
- Bobcat 1600 articulated/wheel loader
- Kubota D1402, V1702, and V1902 engines when equipped with 3974953
Product Overview
White smoke and slow cranking on cold mornings can happen when one or more glow plugs no longer heat. Replacing the full set gives a matched preheat response across the engine instead of leaving several equally aged plugs in service.
Test resistance and power supply before replacement. A failed timer, relay, bus bar, wiring connection, or low cranking speed can create the same hard-start complaint.
Key Features & Performance
- Four matched diesel glow plugs
- 10.5V listed plug specification
- Approximate overall length 74mm
- Fits listed Bobcat loaders with matching Kubota engines
- Aftermarket replacement for 3974953
Replaces Part Numbers
- 3974953
- 76234
Common Uses
- Improving cold-start preheat after failed plug testing
- Replacing swollen, open, or slow-heating plugs
- Completing a four-cylinder matched glow-plug service
- Addressing white smoke during cold cranking
Technical Specifications
- Part Type: Diesel Glow Plug Set
- Quantity: 4
- Listed Voltage: 10.5V
- Approximate Length: 74mm
- Replacement Type: Aftermarket
Installation & Fitment
- Disconnect battery power
- Blow debris away from plug wells
- Remove plugs carefully from a cold engine
- Use the specified torque and do not overtighten
- Test relay timing and bus-bar voltage
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Match 3974953, thread, reach, voltage, terminal, and engine model. Do not substitute a similar-looking glow plug.
Frequently Asked Questions
Q: Why replace all four? A: A matched set can provide more even preheat when the original plugs are the same age.
Q: Can a relay failure look like bad glow plugs? A: Yes. Test power at the bus bar and the controller timing.
Q: Does this fit Bobcat 743B? A: Yes, when the machine uses 3974953 and the listed Kubota engine configuration.
Q: Is it genuine Bobcat? A: No. It is an aftermarket set.
Part Summary
keywords: Bobcat 3974953 glow plugs, 743 skid steer cold start, Kubota V1702 glow plug set, four pack diesel glow plugs, Bobcat 1600 preheat repair, 76234 glow plug replacement
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.