Shopping Cart

Your cart is empty.

Your cart is empty.

Holley Sniper EFI 870021 Sniper EFI MAP Sensor 2.5-bar

Free shipping on orders over $29.99

$31.00

$ 16 .99 $16.99

In Stock

About this item

  • Utilizes Stock attaching points
  • Ideal for applications up to 25lbs of boost
  • This sensor monitors manifold vacuum, varying output voltage to the ECU as a function of load placed on the engine, providing necessary data to control fuel enrichment


Holley Sniper EFI 870021 Sniper EFI MAP Sensor 2.5-bar


Scott H.
Reviewed in the United States on March 12, 2025
Junk. Ended up using a factory ctsv one.
Ryan
Reviewed in the United States on January 26, 2025
Watch out for these sensors. They simply do not work. I ordered 3 to have extras if an issue came up. First sensor I installed read 22 KPA at atmosphere. Second read 42 and the third read 8. Barometric pressure where I live is 93... Not only do the sensors not read normal KPA but they do not read any engine vacuum either. Do not waste your time ordering these. Get a genuine BOSCH or similar. These map sensors are complete junk and wasted a ton of time.
Steve Atkins
Reviewed in the United States on August 24, 2024
Great product
garry harris
Reviewed in the United States on March 8, 2024
I've purchased 2 of these, both failed after about 1 hr of run time , bought the gm 12592525 and been running great ever since, Prob 3k miles. Says made in China right on the package
Jim Bodien
Reviewed in the United States on August 27, 2023
Good Value! Excellent Delivery Time!
Mark Brown
Reviewed in the United States on November 5, 2023
Upgraded map sensor for TBSS/NNBS manifold for supercharged 2005 Chevy SS truck. Perfect fit.
Jeff Cukierski
Reviewed in the United States on July 13, 2022
I use these on LS Gen IV based motors running ~20psi of boost. They work great, look great, and price cannot be beaten!
Recommended Products

$17.19

$ 8 .99 $8.99

4.8
Select Option

$12.00

$ 5 .99 $5.99

4.8
Select Option