SKU: 63851097067

Holley Sniper EFI Quadrajet Self Tuning Fuel Injection System # HO550-867K

Sale price$1482.75 Regular price$1647.50
Save 10%

Pay in installments of $411.88 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 9 - Aug 14

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Holley Sniper EFI Quadrajet Self Tuning Fuel Injection System # HO550-867KHolley Sniper EFI Quadrajet Self Tuning Fuel Injection System # HO550 867K "Fuel Injection System, Sniper EFI QuadraJet, Master Kit, Polished, Kit Fuel Injection System Type: Single 4 Barrel Throttle Body (Spread Bore Flange) Maximum Horsepower with Gas: 500 Timing Control Compatible: Yes Power Adder Compatible: No ECM Included: Yes Self Tuning: Yes User Tunable: Yes Fuel Pump Included: Yes EGR: No Transmission Controller Included: No Metering Style:

Holley Sniper EFI Quadrajet Self Tuning Fuel Injection System # HO550-867K
"Fuel Injection System, Sniper EFI QuadraJet, Master Kit, Polished, Kit
Fuel Injection System Type:
Single 4-Barrel Throttle Body (Spread-Bore Flange)
Maximum Horsepower with Gas:
500
Timing Control Compatible:
Yes
Power Adder Compatible:
No
ECM Included:
Yes
Self Tuning:
Yes
User Tunable:
Yes
Fuel Pump Included:
Yes
EGR:
No
Transmission Controller Included:
No
Metering Style:
Speed density
Intake Manifold Included:
No
Multi-Port Fuel Rails Included:
No
Throttle Body Included:
Yes
Throttle Body Mounting Flange:
4-barrel spread bore
Venturi Quantity:
4
Venturi Diameter (mm):
34.93/51.00mm
Airflow Rate (cfm):
715 cfm
Throttle Body Material:
Cast aluminum
Throttle Body Finish:
Tumble polished
Injectors Included:
Yes
Injector Size (lbs/hr):
100 lbs./hr.
Calibration Module Included:
Yes
Wiring Harness Included:
Yes
Oxygen Sensor Included:
Yes
Fuel Pressure Regulator Included:
Yes
Distributor Included:
No
MAP Sensor Included:
Yes
IAT Sensor Included:
No
TPS Sensor Included:
Yes
IAC Motor Included:
Yes
Quantity:
Sold as a kit.
Notes:
This kit will work on any vehicle equipped with a 4-barrel Quadrajet style flange intake manifold. Kit features provisions on throttle lever for TH350, TH400, 200R4, or 700R4 transmissions and universal throttle and kickdown bracket.
Holley Sniper EFI Quadrajet Self-Tuning Fuel Injection Systems
Holley Sniper EFI Quadrajet self-tuning fuel injection systems are ideal replacements when you're tired of rebuilding the 50-plus-year-old Rochester Quadrajet (Q-jet) on your classic ride. They're the first bolt-on, spread-bore, EFI throttle-body systems not requiring any additional adapters, sealing plates, or intake manifold swaps! They retain the same great features as the 4150 Sniper EFI version (four 100 lbs.-hr. injectors; built-in timing control; high resolution 3.5 in. full color touchscreen; etc.). Their throttle body will support naturally aspirated power up to 500 hp. In addition, they offer multiple fuel inlet configurations that allow for a stock-appearing installation and fit most stock air cleaners. Modernize your Q-jet-powered classic vehicle with a Holley Sniper EFI Quadrajet self-tuning fuel injection system. They are offered individually or in Master kits with external fuel pressure regulator preset to 58.5 psi, 20 ft. of 3/8 in. Vapor Guard fuel hose, fuel pump, filters, necessary hardware, and bulkhead fitting to return fuel into the tank.Features, items, and specs: Designed to deliver the signature "Rochester Roar" at wide-open throttle! Throttle body-mounted ECUno extra boxes to mount Only 4 wiring connections required (battery positive and negative, switched ignition, and rpm) Transmission provisions on throttle lever for TH350/TH400 and 200R4/700R4 Universal throttle and transmission kick-down bracket Brake booster adapter (if required) Simple calibration wizard (answer a few questions about your engine and it creates the base map, then starts tuning on its ownno laptop required) External fuel pressure regulator preset to 58.5 psi 20 ft. of 3/8 in. Vapor Guard fuel hose Fuel pump and filters Necessary hardware and bulkhead fitting to return fuel to the tank Genuine Bosch LSU 4.9 wide-band oxygen sensor provides real-time fuel map learning OEM-style throttle position sensor (TPS) and idle air control (IAC) for years of dependable service Clamp-on oxygen sensor kit ensures leak-free oxygen sensor installation with stainless steel T-bolt clamps and weld-ready 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: 63851097067

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.5 ★★★★★
Based on 5 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
Verified Purchase
Jose Perez
Houston, US
★★★★★ 5
they give what they offer
Size: 5 Quart, Style: Full Synthetic, Configuration: 0W-40
great service from seller it was exactly how much oil quantity i ordered and its great quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
G
Verified Purchase
Gregory Allen DeAtley
Grantham, US
★★★★★ 5
Works great
Number of Items: 4, Style: SILZKAR7B11
Exactly what it is supposed to be ! Good service
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
K
Verified Purchase
Kim Justice
Houston, US
★★★★★ 5
Perfect
Number of Items: 4, Style: SILZKAR7B11
Great Quality. Worked Perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 13, 2025
J
Verified Purchase
Jhonn Arguello
West Palm Beach, US
★★★★★ 5
Muy buenas
Number of Items: 4, Style: SILZKAR7B11
Excelente
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 29, 2025
A
Verified Purchase
Arlin Metzler
Charlottesville, US
★★★★★ 1
Chinese junk
Number of Items: 4, Style: SILZKAR7B11
Chinese junk zero stars but that’s not an option
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026

recommand products