SKU: 57594109521

HP Billet Carbureted By Pass w/ Idle Bleed Fuel Pressure Regulator - 12-842

Sale price$179.95 Regular price$199.95
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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10

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Description

HP Billet Carbureted By Pass w/ Idle Bleed Fuel Pressure Regulator - 12-842Overview: Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. They are precision machined from 6061 T6 billet aluminum for strength and durability. They feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks. The Holley 12 842 fuel pressure regulator features 3 8" NPT in out ports and a 3 8 NPT return port. Features: Adjustable from 4. 5 9

Overview:

Holley® Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley®. They are precision machined from 6061-T6 billet aluminum for strength and durability. They feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks. The Holley 12-842 fuel pressure regulator features 3/8" NPT in/out ports and a 3/8 NPT return port.

Features:

  • Adjustable from 4.5-9 psi for precise fuel pressure adjustments
  • Constructed of billet aluminum with a black anodized base and clear anodize top for good looks
  • Utilizes a idle bleed for precise control of idle pressure
  • Used in systems with a return line back to tank
  • One 3/8" NPT inlet, one 3/8" NPT outlet and one 3/8" NPT return (or bypass)
  • 1/8" NPT gauge port
  • Comparable and interchangeable with popular Holley® 12-803BP regulator
  • Mounting bracket included

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Brand Holley
Color Black Anodized
Emission Code 5
Fuel System Carbureted
Fuel Type Gasoline/Alcohol
Inlet Size 3/8 inch NPT
Material Aluminum
Outlet Size 3/8 inch NPT
Pressure Range 4.5-9 PSI
Product Type Fuel Pressure Regulator
Return Size 3/8 inch NPT
Style Bypass
Warning California Proposition 65
Warranty Limited 90 Day
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: 57594109521

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4.7 ★★★★★
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Dan G
Louisville, US
★★★★★ 5
Great value and good quality
Great value and looks great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2026
M
Verified Purchase
MattPF
Pawtucket, US
★★★★★ 5
Amazing value
Super nice quality jacket for the price... I was shocked how nice it was actually. For me it wasn't the right fit though... Amazon recommended a size M (5'9" 145lbs) and it was way too big. Was not the slimmest of slims either, so it just felt too big and I ended up returning it. But, the item itself was really nice so I still think it's a 5-star jacket. The color, fabric, and sewing were top notch. Oh, I also wasn't a fan of the faux white pocket square... to me this is a blazer that could look nice with jeans but the white pocket square makes it look a little too formal. I'd have kept it if it fit properly and remove that little piece of fabric.
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Reviewed in the United States on February 5, 2026
O
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Oscar suarez
Draper, US
★★★★★ 5
Thank you
To mouch great … very nice
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Reviewed in the United States on March 29, 2026
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Pritesh Patel
Alexandria, US
★★★★★ 3
Good product
Good product
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Reviewed in the United States on February 2, 2026
S
Verified Purchase
stanley h.
Dallas, US
★★★★★ 5
Nice Suit For The Price
This suit was a time-saver! My wife ordered a tux that wasn't going to make it for a formal occasion, so this was ordered and came within three days. It was a good thing she purchased 2, in case of sizing errors. The extra large pants worked, but sizing down to the large jacket & vest made the best combination/fit. We didn't go with the blue/black bow tie & flower it came with, but may for another event. However, being able to work interchangeably at a low price was rewarding!! Thought to add comments that the look of this suit is pleasing (though it's not the best thread). The workmanship gives it a 5 and even greater. The compliments were many. I do suggest using a good steam iron that will eliminate the wrinkles, without creating unwanted creases, while barely touching the suit; but, definitely follow the creases in the pants leg.
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Reviewed in the United States on March 20, 2025

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