New 3T9561 Glow Plug Replacement suitable for Caterpillar Equipment

  • New Glow Plug Replacement suitable for Caterpillar Equipment
  • Made to USA Specification

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$8.00
In Stock • Ships Today • Order By 3pm ET
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SKU
3T9561CTP
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Description for 3T9561 Glow Plug

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This aftermarket Caterpillar 3T9561 Glow Plug is built to meet U.S. OEM specifications for durability and performance. At Propel Parts, we perform strict quality checks to ensure it fits and functions like your original Caterpillar Glow Plug.
Direct Replacement: Engineered for a precise fit in Caterpillar equipment.
OEM-Spec Quality: Manufactured to match the performance of your original part.
Tested Reliability: Strict quality checks are performed before shipping.

Specification for 3T9561 Glow Plug

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Replacement Part Number(s): 3T-9561
Specifications: Aftermarket Part | US OEM Specs.
Shipping: Same Day (Weekdays) | Order by 3pm.
Warranty: Unlimited Mileage | 1 Year Warranty.
Core: No Core Required | No Core Charge.
Weight: 0.07 LBS | 0.03 KG
Dimensions: 4.72 x 0.39 x 0.39 (inches)
Condition: New

Exact Fit Guarantee for 3T9561 Glow Plug

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Looking for a reliable replacement Caterpillar 3T9561 Glow Plug ? Order with confidence through our Exact Fit Guarantee.
Verified Fit: Before we ship, we check your part against CAT SIS (Caterpillar Service Information System) to confirm it's the correct match for your machine.
Peace of Mind: If it isn't the right fit, we'll contact you with the correct Caterpillar part number before your order goes out.
Exclusive Guarantee: Enroll in our Exact Fit Guarantee at checkout to ensure you get the part you need the first time.
More Information
Models D330C, D333C, 3304, 3306
Dimensions 4.72x0.39x0.39
Customer Reviews
  1. 100%
    I was able to source my parts with propelparts in one click pay and have the shipment worked on under 60 minutes, with various options of couriers i received my shipments in less than 10days
    The parts a durable and efficient
  2. 100%
    Helpful with making sure parts fit my machine
  3. 100%
    Propel Parts provided quality parts for my Caterpillar needs at a very fair price. Shipping to my international location was very fast. took about a week for the parts to get here. Seller is also responsive with my inquiry.
    Thanks again
  4. 100%
    customer service and parts availability is fantastic
  5. 100%
    Great service!
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Frequently Asked Questions

Product

What is the 3T9561 plug used for?

The 3T9561 plug seals an opening or heats/ignites as its design requires, keeping the system closed or supporting combustion. Its correct function protects the assembly.

How do I install the 3T9561 plug?

A reliable installation of the 3T9561 starts with inspection and ends with verification. Follow this process:

  1. Shut off and cool the engine, then disconnect power if electrical
  2. Remove the old plug and clean the threads and seat
  3. Inspect the bore and threads for damage
  4. Thread the 3T9561 in by hand, then torque to specification
  5. Reconnect any wiring and test for correct operation

Which Caterpillar machines is the 3T9561 compatible with?

The 3T9561 is matched to particular Caterpillar equipment, so always verify the application against your parts reference before purchasing. Or reach out to Propel Parts for help verifying fitment.

Does the 3T9561 plug meet performance standards?

Yes. Propel Parts supplies the 3T9561 as a premium aftermarket part made to meet OEM specifications. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications so you can fit it with confidence.

How often should the 3T9561 be replaced?

Replace the 3T9561 whenever the assembly it serves is overhauled, or any time it shows wear, damage, or corrosion. Following the intervals in your service manual is the best guide.

What are the signs of a worn or failing 3T9561 plug?

Catching a failing 3T9561 early prevents wider damage. The common warning signs include:

  • Leaks or loss of pressure at the plug
  • Hard starting or rough running (for heating/ignition types)
  • Corroded or damaged threads
  • Warning indicators related to the circuit

Why is the 3T9561 important, and what related parts work with it?

Keeping the 3T9561 in good condition protects the components around it and supports smooth, reliable operation. Maintaining the assembly with parts that meet OEM specifications helps you avoid unplanned downtime. Related hardware on our site includes 6V5597 Seal and 1337068 Gasket Ctp.

Questions About this Part?
Have a question about fit, compatibility, shipping, warranty, or returns?

This 3T9561 Glow Plug is compatible with the following models:
D330C, D333C, 3304, 3306 & more...

Shipping

We know equipment downtime costs money, so fast and reliable shipping is a priority at Propel Parts. Orders placed on weekdays before 3:00 PM ET typically ship the same day, with expedited delivery options available for many locations when time is critical.

We ship across the U.S., Canada, and over 130 countries worldwide, helping customers keep machines running wherever they operate. Available shipping methods and delivery estimates are shown at checkout so you can select the option that best fits your timeline.

Tracking information is emailed within 24–48 hours after your order is processed, giving you full visibility from dispatch to delivery and peace of mind that your parts are on the way.

Easy Returns

Our refund policy is simple. We offer a 30-day, no-hassle return policy, and we make every effort to provide the best service and highest-quality parts possible. If you’re not fully satisfied with your purchase, you may return it within 30 days for a refund. Full details are available on our Returns Policy page.

Warranty

Buy with confidence. All parts from Propel Parts are covered against material or manufacturer defects for 12 months from the original invoice date. We stand behind every part we sell, so you can count on reliable performance and dependable support. Full details are available on our Warranty Policy page.

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