SKU: 38504644781

Manta | 1 3/4″ 4-Into-1 Tuned Extractors with 3″ Outlets | Holden HQ HJ HX HZ WB 5.0L 304 EFI Conversion

Sale price$519.32 Regular price$577.02
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Ships within 48 hours · Estimated delivery Sep 20 - Sep 25

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Description

Manta | 1 3/4″ 4-Into-1 Tuned Extractors with 3″ Outlets | Holden HQ HJ HX HZ WB 5.0L 304 EFI ConversionManta 1 3 4 4 Into 1 Tuned Extractors with 3 Outlets for Holden HQ HJ HX HZ WB 5. 0L 304 EFI Conversion Boost the performance of your Holden HQWB with these precision engineered 1 3 4 4 into 1 tuned extractors from Manta. Featuring 3 outlets, they are designed for improved exhaust flow, better scavenging, and increased power in EFI 5. 0L 304 V8 conversions. Note: There could be some modifications required for the fitment of this product. Any non

Manta 1 3/4″ 4-Into-1 Tuned Extractors with 3″ Outlets for Holden HQ HJ HX HZ WB 5.0L 304 EFI Conversion

Boost the performance of your Holden HQ–WB with these precision-engineered 1 3/4″ 4-into-1 tuned extractors from Manta. Featuring 3″ outlets, they are designed for improved exhaust flow, better scavenging, and increased power in EFI 5.0L 304 V8 conversions.

Note: There could be some modifications required for the fitment of this product. Any non-standard engine mounts, gearboxes, coolers or steering racks may interfere with fitment.

Warranty

Stainless Steel Systems – 10 years
Aluminised Systems – 2 years

Why Manta?

Manta is an Australian leader in exhaust performance, engineering, and durability. Every system is designed for optimal fitment, appearance, and sound, built to handle Australian conditions.

Key Features:

  • Primary Size: 1 3/4″
  • Outlet Size: 3″
  • Design: 4-into-1 tuned extractors
  • Compatibility: Holden HQ, HJ, HX, HZ, WB EFI 5.0L 304 V8 conversions
  • Material: Stainless Steel

Technical Specifications

  • Brand: Manta
  • Part Number (SKU): FX-303
  • System Type: Extractors
  • Primary Size: 1 3/4″
  • Outlet Size: 3″
  • Configuration: 4-into-1 tuned
  • Material: Stainless Steel

Vehicle Fitment Information

Make Model Years Body Engine
Holden HQ, HJ, HX, HZ, WB 1971–1984 Sedan, Ute, Wagon, Coupe 5.0L 304 EFI Conversion

Important Information

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  • Shipping times may vary depending on destination and stock availability

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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: 38504644781

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DC
Alexandria, US
★★★★★ 5
Attractive
Size: 7, Color: Grey
Comfortable Get many "nice shoes" compliments
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Reviewed in the United States on May 10, 2026
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Carlos Bravo
Lowell, US
★★★★★ 4
Nice Sporty Dress Shoes
Size: 8, Color: Grey
Look good. Fit good. Feel good.
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Reviewed in the United States on June 29, 2025
S
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Setter mom
West Palm Beach, US
★★★★★ 5
Great shoe. Great style
Size: 9, Color: Olive
Beautiful shoe. Nice quality. Going to reorder in a Wide. Regular runs too narrow for my feet. Hope the Wide works.
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Reviewed in the United States on December 11, 2025
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Amazon Customer
New York, US
★★★★★ 5
Best work shoe
Size: 10.5, Color: Grey
Lots of compliments and comfortable too
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Reviewed in the United States on May 14, 2026
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Verified Purchase
Alyssa P.
Lake Worth, US
★★★★★ 3
Good for the price but will not repurchase
Size: 9, Color: Grey
My husband loved these at first. Pros -easy to get on/off -stylish -comfortable -interior/exterior sole construction lasted longer than other more expensive shoes -price is great Cons -after less than a year the mouth of the shoe widened to a point where they slide off way too easy rendering them almost unwearable. -laces cannot be tightened
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Reviewed in the United States on February 9, 2026

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