SKU: 35354283640

Holley EFI 550-869K Sniper EFI Quadrajet Master Kit

Sale price$944.97 Regular price$1049.97
Save 10%

Pay in installments of $262.49 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 3 - Aug 8

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Holley EFI 550-869K Sniper EFI Quadrajet Master KitOverview: Are you tired of rebuilding the 50+ year old Rochester Quadrajet (Q Jet) on your classic Chevrolet, GMC, Buick, Oldsmobile, or Pontiac? Introducing Sniper EFI Quadrajet. The first bolt on spread bore electronic fuel injected throttle body system that does not require any additional adapters, sealing plates, or intake manifold swaps! The Sniper EFI Rochester Quadrajet (Q Jet) system retains the same great features as the 4150 Sniper EFI

Overview:

Are you tired of rebuilding the 50+ year old Rochester Quadrajet™ (Q-Jet) on your classic Chevrolet, GMC, Buick, Oldsmobile, or Pontiac? Introducing Sniper EFI Quadrajet™. The first bolt on spread bore electronic fuel injected throttle body system that does not require any additional adapters, sealing plates, or intake manifold swaps! The Sniper EFI Rochester Quadrajet™ (Q-Jet) system retains the same great features as the 4150 Sniper EFI version such as; four 100lb/hr Injectors, built in timing control, a 3.5" full color touchscreen and much more! The throttle body will support up to 500 horsepower naturally aspirated. In addition to all of these great tried and true features, the Sniper EFI Rochester Quadrajet™ (Q-Jet) system will fit most stock air cleaners and offers multiple fuel inlet configurations that allow for a stock appearing installation!

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 don't 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
  • Patent Pending

 

Application:

Year Make Model Submodel Engine Size
Universal

 

Specs:

Brand Holley Sniper EFI
CFM 715
Coast Guard Approved Yes
Emission Code 3
Finish Classic Gold
Flange Style Spreadbore
Fuel Pressure 58.5 PSI
Height 3.28"
Injector Size 100 lb/hr @ 58.5 PSI
Inlet / Outlet Size 9/16-18 Female O-Ring (AN 6)
MAP Sensor 2Bar
Max Horsepower Rating 500 Naturally Aspirated
Product Type Sniper 4BBL TBI Kits
Throttle Bore 1.375 Primary / 2.00 Secondary
Transmission 700R4/200R4
Warning California Proposition 65
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: 35354283640

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 30 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
N
Verified Purchase
Nick C
Natrona Heights, US
★★★★★ 5
Great for emergencies !!
Color: Red
This GOOLOO A3 jump starter is super handy to have in the car. It started my vehicle quickly with no issues, and it’s really easy to use. The built-in air compressor is a big plus. It fills tires fast, and I like that you can set the pressure and it shuts off automatically. It’s compact, holds a charge well, and feels solid. Definitely a great all-in-one emergency tool. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
J
Verified Purchase
Jeremy Earls
Cuba, US
★★★★★ 4
Great little tool
Color: Red
Does at it should. It's a little loud when using it on a car tire. Was unable to jump start a dead car. Battery life is fairly decent. Good for emergencies
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
S
Verified Purchase
serhiy
Carnegie, US
★★★★★ 5
Saved me on the side of the road!
Size: 72PCS, Size: 72PCS
Got a nail in my tire and this kit made the repair so easy. Everything you need is included and the instructions were straightforward — no mechanic needed. Worked perfectly and held up great. Highly recommend keeping one of these in your car!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
V
Verified Purchase
Victor R.
Omaha, US
★★★★★ 5
Excelent kit
Size: 72PCS
“Excellent kit, very easy to use and good quality. It helped me repair a tire quickly and without any issues. Highly recommended.”
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
A
Amazon Customer
Chelsea, US
★★★★★ 4
72PCS Screw-In Tire Plugs.
Size: 72PCS, Size: 72PCS
This is a kit of 70 tire repair screw-in plugs. There are 30 large plugs, 20 medium plugs, and 20 small plugs, along with a screwdriver and the box. The plugs are reasonable quality and pre-coated with sealant. They are individually sealed in small capsules making them easy to carry and use. They stay clean in their capsules as well. The included screwdriver is better quality than some, but not high quality. To use this kit effectively you're going to need something like needle-nose-pliers to remove the object (nail, etc.) that punctured your tire. After the puncture object is removed you will choose the appropriately sized plug and screw it into the hole to seal the puncture. To do this, you're going to want a decent screwdriver. The one included may get the job done, but since you still need the pliers (or similar tool) available, why not get a good screwdriver as well. It will make the job much easier and more effective. These plugs are great for fixing many types of punctures to your tires. They won't work for all flat repairs, but they are great to have on hand for the most common types. This kit has a lot of plugs that will potentially repair a lot of punctures. With a better screwdriver and a tool to remove whatever punctured your tire this is a solid choice to have in case of a puncture emergency.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026

recommand products