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 Aug 2 - Aug 7

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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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4.4 ★★★★★
Based on 6 reviews
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Teri PD
Pawtucket, US
★★★★★ 5
FANTASTIC FIT
Size: 16 Plus, Color: Washed Blue
I'm a 4'7" , 65 year old woman. Due to abdominal issues I needed jeans that give that extra something on the waist. I've tried on just about every brand of jeans ranging in size from adult/junior 6 to 12. If they fit on the legs the waist was huge. If they fit on the waist the legs and butt had enough room for me and a friend. I was resigned to wearing yoga pants and leggings with big shirts. My son mentioned that he loved the Amazon basics men's dress slacks, so I figured why not. First I looked at women's and juniors, and I knew from the measurements that I was still stuck. Then I remembered that about 15 years ago I'd buy girls pants (I was a size 12 in kids at the time) Looking at the sizes I knew a 12 was way too small, then I saw the 16 plus. With hesitation I bought them. Well glory be miss Agnes, THEY FIT. Comfortable, real jeans again. Sure, I have to take them up about 6 inches, but that's fine, not a problem. I'm just so happy to have real jeans again !!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 30, 2023
T
Verified Purchase
Tamm
Houston, US
★★★★★ 5
Love them!
Size: 7 Slim, Color: Washed Blue
I did but expect these jeans to fit so well and look so nice on my daughter. Hands down the best jeans I’ve purchased for her, much better fit and quality than the other stores! The length is perfect, but it’s a little snug in the waist. Still a great fit with some stretchiness! Great value!
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Reviewed in the United States on July 25, 2025
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Verified Purchase
Ljs
San Leandro, US
★★★★★ 5
Great pair of Jean and great price!
Size: 14, Color: Washed Blue, Size: 14, Color: Washed Blue
I can’t believe these were only $13. They feel and look like quality jeans, very basic/simple boot cut. My daughter says they’re stretchy and comfortable. I ordered her a size 14 (12’s fit her waist but are always too short) She’s 11 years old, 5’ tall, about 80lbs. The waist adjusters were great for the perfect fit.
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Reviewed in the United States on August 9, 2025
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Verified Purchase
ABuc
Massapequa, US
★★★★★ 5
Love the Options
Size: 10 Slim, Color: Medium Wash
I love that there are slim and plus sizes. Allows me to find the perfect fit for my girls!!
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Reviewed in the United States on May 9, 2026
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tonya k
Natrona Heights, US
★★★★★ 5
Amazing jeans! My daughter loves them!
Size: 7 Slim, Color: Washed Blue, Size: 7 Slim, Color: Washed Blue
My daughter is really slim but tall. She is 7 about 50 pounds. She loves them and I’m so happy because all the other jeans that I buy I have to return cuz they are all too big on her. The jeans are stretchy and feel much more expensive for the price! Great quality! I will be ordering more for sure!
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Reviewed in the United States on April 14, 2026

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