SKU: 48329273917

Pacemaker | 1⅝" Tri-Y Performance Headers | HSV AWD Coupe 4, Avalanche & XUV 5.7L | PH5366 L/R HSV Kit

Sale price$497.24 Regular price$552.49
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

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Description

Pacemaker | 1⅝" Tri-Y Performance Headers | HSV AWD Coupe 4, Avalanche & XUV 5.7L | PH5366 L/R HSV KitPacemaker Tri Y Performance Headers HSV VY VZ AWD Coupe 4, Avalanche & Avalanche XUV 5. 7L Gen III PH5366 L R HSV Kit Unlock the performance potential of your All Wheel Drive HSV with the Pacemaker PH 5366 Tri Y Performance Headers. Specifically engineered for the unique chassis requirements of the AWD Coupe 4, Avalanche Wagon, and Avalanche XUV Ute, these headers provide a significant upgrade over factory manifolds. The Tri Y design is precision

Pacemaker Tri-Y Performance Headers - HSV VY-VZ AWD Coupe 4, Avalanche & Avalanche XUV 5.7L Gen III - PH5366 L/R HSV Kit

Unlock the performance potential of your All-Wheel Drive HSV with the Pacemaker PH 5366 Tri-Y Performance Headers. Specifically engineered for the unique chassis requirements of the AWD Coupe 4, Avalanche Wagon, and Avalanche XUV Ute, these headers provide a significant upgrade over factory manifolds. The Tri-Y design is precision-tuned to maximize exhaust scavenging, enhancing the torque and power delivery of the 5.7 Litre Gen III engine. Constructed with 1⅝" (41mm) primary pipes and 1⅞" (48mm) secondaries, this kit ensures optimal exhaust flow while maintaining essential clearances for power steering and air conditioning systems. Designed for automatic transmission models, these headers offer the high-quality, bolt-on performance Pacemaker is known for.

Features:

This product offers the following performance features:

  • AWD Optimized: Custom-designed specifically for the HSV All-Wheel Drive (AWD) chassis.
  • Tri-Y Design: Pulse-matched design to increase low-to-mid range torque, ideal for heavy-duty performance and daily driving.
  • Premium Construction: Mandrel-bent 1⅝" (41mm) primary and 1⅞" (48mm) secondary pipes for superior exhaust velocity.
  • High-Flow Outlet: Features a 2½" (63mm) outlet to support increased power levels.
  • System Compatibility: Fully compatible with Power Steering and Air Conditioning systems.
  • Precision Engineering: Designed to fit HSV VY and VZ models with the 5.7L Gen III engine and automatic transmission.
Product Specifications for PH 5366
Feature Value Feature Value
Part # PH 5366 Gasket DSF 138
Primary Pipe 1⅝" (41mm) Secondary Pipe 1⅞" (48mm)
Outlet 2½" (63mm) Oxy Sensor Yes
P/Steering Yes Fitting Time 3 Hrs

Important Notes:

  • Wiring Extensions: Models VY Series II and VZ require Oxygen Sensor Wiring Loom Extensions (VY Series II: PEX5367Y x 1; VZ 5.7L: PEX5367Z x 1).
  • Transmission: Specifically designed for Automatic transmission models.

Important Information

  • The image shown may not reflect the actual product
  • Shipping times may vary depending on destination and stock availability

Vehicle Applications:

Make Model From To Body Series Engine Variant Drivetrain
HSV Coupe 4 / Avalanche / Avalanche XUV 2003 2006 Coupe / Wagon / Ute VY - VZ 5.7L Gen III V8 Automatic AWD
Warranty Information
Product Warranty Period
Pacemaker Headers Two (2) years.
Pacemaker King Brown 4x4 Exhaust systems Five (5) years.
Pacemaker Sports exhaust systems Five (5) years.
Fabrication products and accessories One (1) year.

Payment & Security:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

 

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Pacemaker Tri-Y Performance Headers - HSV VY-VZ AWD Coupe 4 / Avalanche / XUV 5.7L V8 - PH 5366 L/R HSV Kit

Unlock the performance potential of your All-Wheel Drive HSV with the Pacemaker PH 5366 Tri-Y Performance Headers. Engineered specifically for the rare AWD HSV line-up, including the VY-VZ Coupe 4, Avalanche wagon, and Avalanche XUV ute, these headers are designed to clear the complex AWD drivetrain while providing substantial gains in power and torque. The Tri-Y design focuses on optimizing exhaust scavenging for the 5.7 Litre Gen III LS1 engine, ensuring improved throttle response and a deep, aggressive V8 note. Built with mandrel-bent 1⅝" (41mm) primary pipes and 1⅞" (48mm) secondaries, these headers provide the high-flow efficiency needed for both street performance and heavy-duty use. Proudly Australian-made, this kit is specifically tailored for automatic transmission models.

Features:

This product offers the following performance features:

  • AWD Specific Engineering: Custom-designed to fit the unique chassis and drivetrain of HSV All-Wheel Drive models.
  • Tri-Y Scavenging: Optimized pipe routing to maximize mid-range torque and horsepower.
  • High-Flow Construction: 1⅝" (41mm) primaries and 1⅞" (48mm) secondaries ensure smooth, unrestricted exhaust velocity.
  • LS1 V8 Performance: Specifically tuned for the 5.7 Litre Gen III engine for optimal efficiency.
  • Full Accessory Clearance: Maintains complete clearance for Power Steering and Air Conditioning systems.
  • Precision Fitting: Designed for a high-quality fit on HSV VY and VZ AWD series.
Product Specifications for PH 5366
Feature Value Feature Value
Part # PH 5366 Gasket DSF 138
Primary Pipe 1⅝" (41mm) Secondary Pipe 1⅞" (48mm)
Outlet 2½" (63mm) Oxy Sensor Yes
P/Steering Yes Fitting Time 3 Hrs

Important Notes:

  • Wiring Extensions: Models VY Series II and VZ require Oxygen Sensor Wiring Loom Extensions.
  • VY Series II: Requires Part No PEX5367Y x 1.
  • VZ 5.7Ltr: Requires Part No PEX5367Z x 1.
  • Transmission: Specifically designed for Automatic models.

Important Information

  • The image shown may not reflect the actual product
  • Shipping times may vary depending on destination and stock availability

Vehicle Applications:

Make Model From To Body Series Engine Variant Drivetrain
HSV Coupe 4 / Avalanche / Avalanche XUV 2003 2006 Coupe / Wagon / Ute VY - VZ 5.7L Gen III LS1 Automatic AWD
Warranty Information
Product Warranty Period
Pacemaker Headers Two (2) years.
Pacemaker King Brown 4x4 Exhaust systems Five (5) years.
Pacemaker Sports exhaust systems Five (5) years.
Fabrication products and accessories One (1) year.

Payment & Security:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

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: 48329273917

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H
Holidaye
Waukegan, US
★★★★★ 4
Fun Toy for Large Dogs, but Hard to Grab from Flat Surfaces
I gave this to a large dog to see how it would hold up during play. He really enjoys it and stays engaged with it, especially during active play sessions. The material feels durable enough to handle a bigger dog’s strength. It’s bright and easy to spot, which helps when playing outdoors. It’s clearly designed for interactive play. One thing I noticed is that it can be a little difficult for him to pick up off the ground. The shape doesn’t give much to grab onto when it’s lying flat. Once he gets it, he enjoys it, but getting started can take a second. It’s still a fun toy, just something to keep in mind. Works best when tossed or handed to them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
W
Winter hill
Boise, US
★★★★★ 5
An absolute powerhouse for heavy chewers—survived the "same-day" test!
Finding a toy that can survive a large dog is usually an expensive game of trial and error. More often than not, new toys end up destroyed in the exact same day we buy them. However, the Wagalicious Tuggfinity Lime toy has completely defied expectations. This large, lime green tug toy is built like a tank. It is the perfect size for larger breeds and has actually held up incredibly well to intense tugging and heavy chewing sessions. Instead of shredding into pieces within hours, it’s still going strong. The best part is the price point. At around $15, the value is absolutely awesome. Usually, you have to pay a massive premium for "indestructible" style dog toys, but this one gives you top-tier durability without breaking the bank. If you have a big dog that demolishes everything, this is a must-have.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
R
Russ
Phoenix, US
★★★★★ 5
Dad approved
I bought this because my dogs do not want “gentle play.” They want something they can really grab, shake, and try to win. This has been a great tug toy for that. The material feels thick, the stitching has held up, and it has enough grip that I can keep control without it slipping. It is also easy to rinse off after backyard dirt and dog drool. This is the kind of toy that actually gets used instead of ending up ignored in the corner.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
N
Nikki H.
Lake Worth, US
★★★★★ 5
My Scottie loves it!
This item arrived in a sealed plastic bag to protect it during shipping. My Scottish Terrier LOVES this toy! She's the queen of tug-o-war, and the more she can fling a toy around, the better, which makes this one a winner in her mind. It's very comfy for us to hold onto while she tries her best to yank our arm off with it, since she can really get a good grip on her side. My Westie wasn't impressed, but she's not really a "toy" dog, to begin with. So far, it has withstood the might of the Scottish Terrier alligator jaws, despite her trying her best to destroy it, so hopefully she'll be able to enjoy it for awhile. Great quality, great durability, made in the USA, and for a reasonable price, it's a winner in our house!
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Reviewed in the United States on May 11, 2026
P
Pixie
Charlottesville, US
★★★★★ 5
Our dogs love it. A great, indestructible, chewing experience.
Our dogs love playing with this wagalicious tuggfinity toy. In my pic you can see that they fell asleep playing with it. They chased each other around the house with it and played tug a war with it until they exhausted themselves so I’d say this is a huge hit with our fur baby’s. At 9”x7” it’s a perfect size for our big dogs. The material it’s made from (TPR) it super tough, durable and has a bit of flexibility to it and they can sink their teeth into it and tug a war with it without it getting chew marks or falling apart. It gives them something to chew in that’s not hard but is soft enough to give them great chew satisfaction. It’s a bit heavy which is good for my big dogs too because its weight keeps them active. Non toxic as well. I’d say this is a great value and because they love it so much then I love it too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026

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