SKU: 95742581166

Holley Sniper EFI Self-Tuning Fuel Injection Dual Quad System # HO550-527

Sale price$1878.75 Regular price$2087.50
Save 10%

Pay in installments of $521.88 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Holley Sniper EFI Self-Tuning Fuel Injection Dual Quad System # HO550-527Holley Sniper EFI Self Tuning Fuel Injection Dual Quad System # HO550 527 Fuel Injection System, Holley Super Sniper 1250 HP, 4150 Flange, Self Tuning, Aluminum, Polished, Throttle Body, Kit Fuel Injection Style: Throttle body Fuel Injection System Type: Dual 4 Barrel Throttle Bodies (4150 Flange) Maximum Horsepower with Gas: 1,250 Timing Control Compatible: Yes Power Adder Compatible: No ECM Included: Yes Self Tuning: Yes User Tunable: Yes Fuel Pump

Holley Sniper EFI Self-Tuning Fuel Injection Dual Quad System # HO550-527
Fuel Injection System, Holley Super Sniper 1250 HP, 4150 Flange, Self-Tuning, Aluminum, Polished, Throttle Body, Kit
Fuel Injection Style:
Throttle body
Fuel Injection System Type:
Dual 4-Barrel Throttle Bodies (4150 Flange)
Maximum Horsepower with Gas:
1,250
Timing Control Compatible:
Yes
Power Adder Compatible:
No
ECM Included:
Yes
Self Tuning:
Yes
User Tunable:
Yes
Fuel Pump Included:
No
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 square bore
Venturi Quantity:
8
Airflow Rate (cfm):
1,600 cfm
Throttle Body Material:
Cast aluminum
Throttle Body Finish:
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:
No
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:
The Sniper EFI 4150 2x4 was designed for use on naturally aspirated engines. The system requires a high pressure fuel pressure regulator and fuel pump capable of supplying the fuel demand and maintain 60 psi of fuel pressure at all conditions.
Holley Sniper EFI Self-Tuning Fuel Injection Systems
Holley Sniper EFI self-tuning fuel injection systems deliver all the benefitsand none of the hassles. These full-featured throttle bodies are easy to install, can support a lot of horsepower, and will keep your budget intact. They put an end to carburetor cold start issues, hesitations, vapor lock, and flooding. Each Sniper EFI self-tuning fuel injection system includes an internal fuel pressure regulator (preset to 58.5 psi), eliminating the hassle of plumbing an external model. Make your conversion simple, while getting maximum bang for your buck with a Holley Sniper EFI self-tuning fuel injection system. Order the model for your application needs.Holley Sniper EFI self-tuning systems feature: Available finishes: black ceramic, classic gold, and shiny Available in base and master kits (master kits include complete fuel system: 20 ft. of Earl's Vapor Guard fuel hose; 12-920 fuel pump; filters; necessary hardware, and bulkhead fitting for returning fuel to tank) Dual-pattern bolt-on carburetor replacement, designed to fit 4150 flange and spread-bore manifolds (spread bore sealing plate 9006 recommended) Supports up to 650 hp with four 100 lbs./hr. injectors 4-wire vehicle connection: battery +, battery -, switched ignition, and rpm Integrated ignition timing control and coil driver Color touchscreen for setup and gauge views Calibration wizard and self-tuning, integral-mounted ECU no laptop required
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: 95742581166

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 15 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
R
Verified Purchase
Roland R
Draper, US
★★★★★ 5
Runs small in the waist
Size: 34, Color: Black With Black Strip
These are good pants, but as other reviewers have noted, they tend to run small. Order one size up from the size you normally order. I'm a 34 inch waist, and I ordered the 34. They were tight, and I had to have them let out. I may order another pair, and if so, I'll order the 36. Don't be vain. Be smart.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2015
S
Verified Purchase
saygoconsultingms
Bozeman, US
★★★★★ 1
Poor fit
Size: 42, Color: Black With Golden Yellow
Poor fit and drape is consistent with the low price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 2, 2025
K
Verified Purchase
kh53
Dallas, US
★★★★★ 5
Good value
Size: 40, Color: Black With Black Strip
My husband and brother in law both found these pants to fit a little smaller than regular dress pants.....mostly they were tighter in the thighs but the length/waist was perfect. They each ordered a size or two up and had the pants tailors to fit. They looked very sharp and were of a good quality considering they were not super expensive. I hope they have the chance to wear these more often!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 6, 2013
A
Verified Purchase
Amazon Customer
Lowell, US
★★★★★ 5
Great Shoes
Size: 10, Color: Cognac
Love these shoes super comfortable and look great. Everyone asks me where I got them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
A
Verified Purchase
Amazon Customer
Draper, US
★★★★★ 5
Beautiful shoe but too narrow
Size: 10 Wide, Color: Navy Grainy Leather
Too narrow
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026

recommand products