Holley Sniper EFI Quadrajet Self-Tuning Fuel Injection System # HO550-869K
SKU: 16971892307

Holley Sniper EFI Quadrajet Self-Tuning Fuel Injection System # HO550-869K

Sale price$1507.50 Regular price$1675.00
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

Holley Sniper EFI Quadrajet Self-Tuning Fuel Injection System # HO550-869KHolley Sniper EFI Quadrajet Self Tuning Fuel Injection System # HO550 869K Features: Designed to deliver the signature Rochester Roar at Wide Open Throttle! Throttle body mounted ECU no extra boxes to mount Supports up to 500hp with Four 100 Lb Hr Injectors! Only 4 Wiring Connections Required! (Battery +, Battery , Switched Ignition RPM) Integrated ignition timing control Transmission provisions on throttle lever for TH350 TH400 and 200R4 700R4 Fits

Holley Sniper EFI Quadrajet Self-Tuning Fuel Injection System # HO550-869K
Features:
Designed to deliver the signature Rochester Roar at Wide Open Throttle!
Throttle body mounted ECU no extra boxes to mount
Supports up to 500hp with Four 100 Lb/Hr Injectors!
Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition RPM)
Integrated ignition timing control
Transmission provisions on throttle lever for TH350/TH400 and 200R4/700R4
Fits most stock Rochester Quadrajet (Q-Jet) air cleaners
Brake Booster adapter included, if required
Universal Throttle and transmission kickdown bracket included
High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays.
Simple Calibration Wizard (Answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required!
Complete fuel system includes external fuel pressure regulator preset to 58.5psi, 20ft of 3/8 Vapor Guard Fuel Hose, Fuel Pump, Filters, necessary hardware and bulkhead fitting to return fuel into the tank!
Self-tuning ECU means you dont have to be a computer/tuning wiz to have EFI!
The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn!
OEM Style Throttle Position Senser (TPS)/ and Idle Air Control (IAC) for years of dependable service.
Included clamp-on oxygen sensor kit ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 16971892307

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Jeremy
San Leandro, US
★★★★★ 4
As far as punk rock inspired shirts go this one is
Color: Off White&black, Size: XX-Large
The shirt looks nice but the material isn't what it looks like in the picture. It's actually kind of thick, almost like a weaved cotton pattern, if that makes sense. I got it during a heatwave, couldn't wear it. But if you're looking for a decent fall weather t-shirt, well worth the grab.
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Reviewed in the United States on August 28, 2025
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Lori Ann Rojas
Houston, US
★★★★★ 5
A shirt that makes you feel good...
Color: Off White&black, Size: XX-Large
Im very pickey about fabric and the way it fits my body. This shirt is comfortable. I love the colors. I liked it so much, I bought another one. This shirt makes me feel good when i put it on.
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Reviewed in the United States on September 28, 2025
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Eric Graham
Lake Worth, US
★★★★★ 3
Go up a size
Color: Off White&burgundy, Size: X-Large
Material feels great but sizes are not accurate. If you’re a XL, go up a size.
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Reviewed in the United States on April 4, 2026
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Javi Elenes
Fort Morgan, US
★★★★★ 5
True to size
Color: Off White&burgundy, Size: Small
Loved the shirt !
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Reviewed in the United States on January 1, 2026
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MBL
Houston, US
★★★★★ 5
I returned- did not like the fabric pattern
Color: Off White&black, Size: Large
I returned- did not like the fabric pattern. Nothing wrong w the shirt itself. pic looks better than it is.
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Reviewed in the United States on January 12, 2026

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