SKU: 20827540122

400 Percent Over LLY Duramax Fuel Injector Each 2004.5-2005 New Core Charge Applies Of 150 Each S&S Diesel

Sale price$360.94 Regular price$401.05
Save 10%

Pay in installments of $100.26 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 15 - Aug 20

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

400 Percent Over LLY Duramax Fuel Injector Each 2004.5-2005 New Core Charge Applies Of 150 Each S&S DieselS&S Diesel Motorsport fuel injectors are built to the highest quality standards, using industry leading components, and tested on the worlds best equipment by highly skilled technicians. Our fuel injectors may not be the cheapest, but they regularly outflow the competition for the same claimed size, giving you more performance per dollar. S&S Upgrades Proprietary nozzle honing process for clean and consistent holes Nozzles flow matched to 1 percent

S&S Diesel Motorsport fuel injectors are built to the highest quality standards, using industry leading components, and tested on the world’s best equipment by highly skilled technicians.

Our fuel injectors may not be the cheapest, but they regularly outflow the competition for the same claimed size, giving you more performance per dollar.
S&S Upgrades

  • Proprietary nozzle honing process for clean and consistent holes
  • Nozzles flow-matched to 1 percent variance per set, using OE standards
  • Viscor SAE-J967
  • 40 degrees C
  • 100 bar
  • Injectors flow-matched to 3 percent variance per set
  • Viscor SAE-J967
  • 40 degrees C
  • 4 different pressure/energizing points per injector
  • Injection profiles (rate shape) aligned
  • Injector build spec custom-matched to nozzle flow rate for each size
  • 250 percent (3200 cc/min) and up feature internal body modifications
  • Increased nozzle flow slows down the open/closing time
  • Body modifications improve the injection rate shape

Options

  • Brand new or Bosch remanufactured bodies available
  • We only use reman bodies direct from Bosch for quality purposes, which differ from Bosch-certified remans
  • The industry has adopted a percent increase in nozzle flow over stock as the sizing convention

Available sizes: TorqueMaster, 30 percent, 45 percent, 60 percent, 80 percent, 100 percent, 150 percent, 200 percent, 250 percent, 300 percent, 350 percent, 400 percent, 450 percent, 500 percent

Details:

  • Liter: 6.6
  • Cylinders: 8
  • BlockType: V
  • Fuel Type: Diesel
  • Engine Destination: LLY
  • CC: 6599
  • CID: 403
  • Engine Bore Inches: 4.06
  • Engine Bore Metric: 103
  • Engine Stroke Inches: 3.9
  • Engine Stroke Metric: 99
  • Engine Years: 2004.5-2005
  • Size: 400 Percent Over
  • Condition: New
  • Sold As: Each
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: 20827540122

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.0 ★★★★★
Based on 21 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
F
Verified Purchase
Finngirl
Louisville, US
★★★★★ 5
Good quality, smooth feel
I got these briefs so recently that have washed just one pair so far. First off, these are very comfortable, the material is soft & bordering silky, good quality sewing. Wash well and minimal if any shrinkage. They do come a bit wrinkled from the dryer but hey, these are underwear and will go on smoothly. If it were a t-shirt, I would look sloppy. I feel the sizing is accurate. No rolling and these don't announce themselves under clothing. Planning on getting more of these boxers and replacing my old panties.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
S
Verified Purchase
Skurtzo
Fort Morgan, US
★★★★★ 4
A little snug on the thighs
Size: Medium, Color: Multicoloured G (5-pack)
Super comfy, soft and thin. For reference, I'm 5'6", 135, athletic build. I bought medium. I almost returned them because I thought they were a bit too snug on my thighs, and my thighs are not large at all. I was concerned about panty lines under snug clothing. But, because they're thin, I figured they would probably stretch, so I kept them. So far, I've only worn them under a night shirt, but they're super comfortable and they dont ride up at all. Very nice, but if your thighs are a little thick, you probably won't like them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 29, 2025
S
Verified Purchase
Shanna
Alexandria, US
★★★★★ 5
Functional + Sexy
Size: Small, Color: Multicoloured E-(5-pack), Size: Small, Color: Multicoloured E-(5-pack)
Not only do these feel good, my husband can’t keep his hands off me. They fit so good and are soft. I change into these to sleep but also just use them as shorts to wear around the house. They’re comfortable and don’t slide around. I got a size small and I’m 100lbs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
C
Verified Purchase
ClairY
Carnegie, US
★★★★★ 5
Finally!
Size: X-Large, Color: All Black D (5-pack)
Finally, comfortable underwear that don’t end up giving me a wedgie. I have a round booty and most cuts of underwear end up shifting as I walk and sit. The hem of the underwear comes right under my cheeks and the lightweight material ensures there’s no panty line and no shifting to where I don’t want them! I’m definitely purchasing more.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
A
Verified Purchase
Amazon Customer
Cuba, US
★★★★★ 3
Ehh
Size: Medium, Color: Multicoloured E-(5-pack)
Very thin, still comfy but very thin material. Super soft though. I've worn and washed and they have held up but I won't be repurchasing bc these are so thin
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026

recommand products