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Item #:
78266564
Holley EFI 550-928 Fuel Injection System
93% of respondents would recommend this to a friend
Item #:
78266564
SGD 3796
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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Imported from USA store
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Order now and get it around Saturday, November 28
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What Stands Out
Precision Tuning
Offers advanced fuel management with precise tuning capabilities, ensuring optimal performance and efficiency tailored to specific engine requirements, setting it apart from standard systems.
User-Friendly Interface
Equipped with an intuitive touchscreen display, making setup and adjustments accessible for both beginners and experienced tuners, simplifying the complex process of EFI management.
Compatibility
Designed to seamlessly integrate with a variety of aftermarket and stock components, enhancing versatility and making it an ideal choice for custom builds and upgrades.
Product Details
| Compatible cars | GM LS 4.8/5.3/6.0 LS Truck Engines and LS2/LS3 |
| Vehicle make | GM |
| Vehicle model | LS 4.8, 5.3, 6.0 LS Truck Engines and LS2, LS3 |
| Fuel injection accessory & part type | Fuel Injection System |
| Brand | Holley EFI |
| Automotive parts division | Performance |
| Vehicle fitment type | Specific |
| Items included | 58x, 4x LS Engine Main Harness - EV6 Injector Harness - DBW Throttle Body Harness - 4L60E, 4L80E Transmission Control Harness - Terminator X MAX ECU - ECU Main Power Harness - Bosch LSU 4.9 Wideband Oxygen Sensor - Input, Output Harness - and assor |
| Accessories | 58x/4x LS Engine Main Harness - EV6 Injector Harness - DBW Throttle Body Harness - 4L60E/4L80E Transmission Control Harness - Terminator X MAX ECU - ECU Main Power Harness - Bosch LSU 4.9 Wideband Oxygen Sensor - Input/Output Harness |
| Features | Easy To Use |
| Model | HOL550-928 |
| Weight | 10.45 lb (4.74 kg) |
| Vehicle type | Truck |
| Volts | 12 V |
| Multipack quantity | 1 |
Dangerous Goods
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Who Should Buy?
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Performance Enthusiasts
Ideal for car owners seeking enhanced performance and tuning capabilities in high-horsepower applications.
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Custom Builders
Perfect for those building custom vehicles or retrofitting EFI systems in classic cars for increased efficiency.
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Race Applications
Designed for racers looking for precise fuel management to optimize their engine's performance on the track.
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Budget Buyers
Not suitable for those seeking low-cost fuel solutions due to its premium price point and advanced features.
Product Description
Holley EFI 550-928 Fuel Injection System
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Customer Questions & Answers
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Question:
How to Shop Holley EFI 550-928 Fuel Injection System Online From Ubuy?
Answer: It’s easy to shop Holley EFI 550-928 Fuel Injection System online from Ubuy. You just have to search for the product, choose your shipping method while checking out and get it delivered to your location. -
Question:
Is Holley EFI 550-928 Fuel Injection System Available to Shop Online in Singapore?
Answer: Yes, at Ubuy Singapore this product is available for you to shop at a reasonable price. The Holley EFI 550-928 Fuel Injection System is not available locally but you can trust us with our express shipping services. -
Question:
How Long Does It Take to Get Product After Placing the Order?
Answer: The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.
Holley EFI Performance Fuel Injection Editorial Review
Holley EFI 550-928 Fuel Injection System is specifically designed for GM LS 4.8/5.3/6.0 LS Truck Engines and LS2/LS3, offering fuel injection performance that's easy to use. It comes equipped with essential components like the 58x and 4x LS Engine Main Harness, making installation seamless for automotive enthusiasts. This fuel injection system not only enhances vehicle performance but also includes a Bosch LSU 4.9 Wideband Oxygen Sensor for optimal air-fuel ratio control. Users have praised its straightforward setup, making it an excellent choice for performance-minded truck owners.
Customer Reviews & Ratings
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Pros
- Compatible with GM LS Truck Engines
- Includes multiple necessary harnesses
- Enhances vehicle performance effectively
- Easy installation for enthusiasts
- Features a Bosch wideband oxygen sensor
Cons
- Initial setup may require some technical knowledge
Platform Trust & Buyer Confidence
MB
Mona
Verified buyer
“Everything was efficient and fast. ”
05 November 2026 · via Trustpilot
MT
Music
Verified buyer
“The prices—including shipping costs and customs duties—are clear from the very beginning, with no hidden fees. I highly recommend using their services. My experience with the "Ubuy" website was excellent. I purchased a PRS USA Swamp Ash Special guitar, and it arrived in just 11 days. The shipping service was fantastic, and the product arrived in perfect condition. What I particularly appreciated about the site is that the prices—including shipping costs and customs duties—are clear from the very beginning, with no hidden fees. I highly recommend using their services.”
05 November 2026 · via Trustpilot
WF
William
Verified buyer
“I can't fault this purchase. Had a scarce part i needed, cheaper than i could source it in the UK, ordered and was followed up with great communication and speedy delivery of a very well packaged part.”
06 November 2026 · via Trustpilot
A
Andrew
Verified buyer
“Fast delivery, good and secure packaging, everything was fine and with no problems.”
06 November, 2026 · via Trustpilot
SM
Stephen
Verified buyer
“I am very happy with my insoles purchase, they make my work boots very comfortable and soft to walk on and even mitigate the vibration from driving the truck all day. I would highly recommend this company for online purchases, reliability of product delivery and value for money.”
07 November 2026 · via Trustpilot
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SGD 3796
Order now and get it around Saturday, November 28
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