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Description
Billet Bypass Fuel Pressure Regulator Kit 4.5-9 Psi W/Fittings & Gauge-12-840KITHolley Billet Bypass Style Fuel Pressure Regulator Kits are part of a complete line of fuel system products from Holley. The included 12 840 regulator features a billet aluminum body and a black finish for corrosion resistance and good looks. The regulator contains 3 8" NPT in out ports, a 1 8" NPT gauge port. In addition, 3 Mr. Gasket 3 8" NPT to 6 AN fittings, a barbed fitting for the vacuum port, a mounting bracket, and all necessary hardware are
Holley Billet Bypass Style Fuel Pressure Regulator Kits are part of a complete line of fuel system products from Holley. The included 12-840 regulator features a billet aluminum body and a black finish for corrosion resistance and good looks. The regulator contains 3/8" NPT in/out ports, a 1/8" NPT gauge port. In addition, 3 Mr. Gasket 3/8" NPT to -6 AN fittings, a barbed fitting for the vacuum port, a mounting bracket, and all necessary hardware are also included.
Features:
- Die Cast Aluminum Construction
- Adjustable from 4.5-9 psi for precise fuel pressure adjustments
- 3/8” NPT Inlet, Outlet Ports
- 1/8” NPT Gauge Port and Earl's Fuel Pressure Gauge (100187ERL)
- Mr. Gasket 3/8” NPT to -6 AN fittings (481666-BL x3)
- Mounting Bracket Included
FEATURES
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.3 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 3
Lovely top
Size: Large, Color: Mini Leopard
Beautiful top and size was true to what was listed.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Very nice
Size: Large, Color: Blue White Petal
Perfect length and fit and doesn't cling if you like a more relaxed look. I purchased 3 of these for work and I love them. I can wear them with khaki cropped pants and sandals, very cute. After washing and line drying there hasn't been any shrinkage and the fabric stays nice. Perfect for warmer weather climates!
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Reviewed in the United States on May 18, 2026
★★★★★ 5
Relaxed fit, business or casual summer blouse.
Size: X-Large, Color: Mini Leopard
Light weight summer material, soft, nice feel. Fits well. Color as advertised. I recommend highly.
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Reviewed in the United States on May 24, 2026
★★★★★ 4
Sizing seems to be different depending on color!
Size: Large, Color: Mini Leopard
Ordered in Mini Leopard in Large and Pink in Medium. The Mini leopard was too big and the Pink was to small! Decided to return both and order the pink in large. That fits!!! Sizing is different in different colors! Like the style and hopefully it will wash okay. Kept the pink, large! It did come extremely creased!
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Reviewed in the United States on March 27, 2026
★★★★★ 3
Sizes not consistent
Size: Medium, Color: Mini Leopard
Hit or miss with these. I got 3 all the same size. One is perfect, ones a little tight and one I can't even wear bc the sleeves are so tight. Hang to dry or you'll have super wrinkles.
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Reviewed in the United States on April 26, 2026