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String Trimmer Head with Bump Knob for Homelite Ryobi McCulloch MTD Troy-Bilt Craftsman Cub Cadet Murray DA-03001-A DA-04591-A DA03001 ST155 ST165 ST175 ST27
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String Trimmer Head with Bump Knob for Homelite Ryobi McCulloch MTD Troy-Bilt Craftsman Cub Cadet Murray DA-03001-A DA-04591-A DA03001 ST155 ST165 ST175 ST27
New trimmer head with 3 bump knob for various models of curved shaft string trimmers.
String Trimmer Head with Bump Knob for Homelite Ryobi McCulloch MTD Troy-Bilt Craftsman Cub Cadet Murray DA-03001-A DA-04591-A DA03001 ST155 ST165 ST175 ST27
Item #: 42563994

String Trimmer Head with Bump Knob for Homelite Ryobi McCulloch MTD Troy-Bilt Craftsman Cub Cadet Murray DA-03001-A DA-04591-A DA03001 ST155 ST165

Item #: 42563994

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New trimmer head with 3 bump knob for various models of curved shaft string trimmers.
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What Stands Out

Versatile Compatibility
Designed to fit multiple brands, including Homelite and Ryobi, this trimmer head enhances your gardening toolkit's flexibility, ensuring it meets diverse yard maintenance needs without frequent replacements or adjustments.
User-Friendly Design
Equipped with a bump knob for easy line advancement, this trimmer head minimizes user strain and maximizes efficiency. Simply bump to release more line, allowing seamless operation during yard work.
Durable Construction
Constructed with robust materials, this trimmer head offers long-lasting performance and resilience against wear and tear. This durability translates into excellent value, minimizing frequent replacements and maintaining garden aesthetics effortlessly.

Product Details

Shop the P SeekPro String Trimmer Head with Bump Knob from Ubuy Isle of Man. Compatible with Homelite, Ryobi, McCulloch, MTD, Troy-Bilt, Craftsman, Cub Cadet, Murray and more.
  • New Trimmer head with 3 Bump Knob, includes Trimmer Line
  • Compatible with Homelite, Ryobi, McCulloch, MTD, Troy-Bilt, Craftsman, Cub Cadet, and Murray trimmers
  • Replaces PN: DA-03001-A, DA-04591-A, DA03001, ST155, ST165, ST175, ST275, 300651, MC-300651-00, 753-05127
  • Fits models: Homelite ST155, ST165, ST175, ST275, ST285, Z830SB, D630CD, D725CDE, D825SD, D825SB, and D825CA
  • Fits 3/8 OD Shafts with 5/16 - 18 RH OR LH Thread,1/4-20 RH Thread
  • Package includes: 1 x Trimmer Head with 3 Bump Knob, 1 x Service Card
Item Weight1.5 lbs (680 grams)

Who Should Buy?

Suitable For
  • Home Gardeners

    Ideal for homeowners looking to maintain their lawns and gardens with efficient trimming capabilities.

  • DIY Enthusiasts

    Great for individuals who enjoy home improvement projects and need a reliable trimmer head for various tasks.

  • Landscaping Professionals

    Suitable for professionals in landscaping who require durable and easy-to-use equipment for consistent performance.

Not Suitable For
  • Heavy Duty Users

    Not suitable for commercial users needing industrial-grade tools for frequent and heavy-duty tasks.

  • Non-Compatible Brands

    Users of brands not mentioned may find this product incompatible with their trimmer models.

  • Beginner Users

    Beginners may struggle with its installation and usage compared to more user-friendly alternatives.

Product Description

String Trimmer Head with Bump Knob for Homelite Ryobi McCulloch MTD Troy-Bilt Craftsman Cub Cadet Murray DA-03001-A DA-04591-A DA03001 ST155 ST165 ST175 ST27

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is a String Trimmer Head with Bump Knob?

    Answer: A String Trimmer Head with Bump Knob is a crucial accessory for lawn care, designed to hold and release cutting line efficiently. When the knob is tapped against the ground, it releases more line, allowing for continuous trimming without frequent manual line adjustment. This feature enhances productivity and ensures a clean cut, making it easier to maintain your lawn or garden.
  • Question: Is this trimmer head compatible with my specific model?

    Answer: This trimmer head is compatible with several popular brands, including Homelite, Ryobi, McCulloch, MTD, Troy-Bilt, Craftsman, Cub Cadet, and Murray. Always verify your model against the compatibility list of DA-03001-A, DA-04591-A, DA03001, ST155, and ST165 to ensure a proper fit for optimal performance.
  • Question: How do I install the String Trimmer Head?

    Answer: Installation of the String Trimmer Head is straightforward. Begin by removing the old head from your trimmer, then align the new head with the drive shaft. Secure it by following the manufacturer’s guidelines for your specific model. This simple replacement can greatly enhance the trimmer's performance, making your lawn care routine more efficient.
  • Question: What type of cutting line should I use with this trimmer head?

    Answer: It’s best to use a trimmer line that matches the specifications set by the trimmer head’s manufacturer. Typically, 0.065 to 0.105 inches diameter lines work well, depending on the job’s requirements. Using the correct line enhances cutting efficiency and minimizes wear on the trimmer head, providing a successful trimming experience.
  • Question: Can I use this trimmer head for edging as well?

    Answer: Yes, a String Trimmer Head with Bump Knob can effectively be used for edging. The ability to release more line with a simple bump makes trimming along edges clean and efficient. For the best results, tilt your trimmer slightly in the desired direction to create a precise edge along sidewalks and garden beds.
  • Question: What maintenance does this trimmer head require?

    Answer: Regular maintenance involves checking the line for wear and replacing it as needed. Ensure the bump knob is functioning correctly by checking for clogs or debris that may inhibit its movement. Keeping this part clean will help avoid operational issues and extend the lifespan of your trimmer head.
  • Question: Where can I find replacement parts for this trimmer head?

    Answer: Replacement parts for your trimmer head can typically be found online or at local hardware stores. Check with specific retailers or manufacturers for compatibility with your model to ensure you are purchasing the correct items. Proper maintenance and timely replacements are essential for optimum performance.
  • Question: What are the advantages of using a bump knob trimmer head?

    Answer: A bump knob trimmer head offers significant advantages such as ease of use and reduced downtime. Instead of stopping to manually adjust the line, you can keep working by simply tapping the knob on the ground. This feature is particularly useful for larger areas, as it allows for more continuous operation and efficiency.
  • Question: How does the trimmer head affect grass cutting performance?

    Answer: The trimmer head plays a vital role in grass cutting performance by determining how effectively the cutting line dispenses. A well-functioning bump knob head allows for consistent line length, resulting in even cuts and a healthier lawn. An optimized trimmer head contributes to a cleaner job, making lawn maintenance more satisfactory.
  • Question: Where can I buy the String Trimmer Head with Bump Knob?

    Answer: You can purchase the String Trimmer Head with Bump Knob for Homelite, Ryobi, McCulloch, MTD, Troy-Bilt, Craftsman, Cub Cadet, and Murray at Ubuy. They offer a convenient online shopping experience with a wide selection of gardening accessories tailored to meet your lawn care needs.

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“The product received very good packaging & safe…Thank You”

16 June 2026 · via Trustpilot
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“Accurate delivery timing given”

16 June 2026 · via Trustpilot
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“Not madly expensive like I thought, and much quicker than promised.”

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“Never dealt with Ubuy before, but everything worked out great. Seamless cross border purchasing and shipping. Thanks!”

6/7/2026 · via Trustpilot
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“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”

12 June 2026 · via Trustpilot
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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

IMP 22

Order now and get it around Saturday, July 25

QTY:

Secured transactionsecured transaction

Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • New trimmer head
  • 3 bump knob
  • Fits various models
  • Easy to install
  • Package includes service card