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Description
PacBrake PRXB Exhaust Brake Kit 99-03 7.3L Ford Powerstroke C40009 / C40019Diesel engines, unlike gasoline engines, don't slow down simply by taking your foot off the accelerator; they rely on service and supplemental brakes. An exhaust brake is a form of a supplemental brake, and they work much differently than their conventional counterparts. Introducing the Pacbrake PRXB Pacbrake's flagship product, the PRXB (pressure regulated exhaust brake), is the unquestioned leader in the supplemental brake industry. The patented
Diesel engines, unlike gasoline engines, don't slow down simply by taking your foot off the accelerator; they rely on service and supplemental brakes. An exhaust brake is a form of a supplemental brake, and they work much differently than their conventional counterparts.Introducing the Pacbrake PRXB
Pacbrake's flagship product, the PRXB (pressure regulated exhaust brake), is the unquestioned leader in the supplemental brake industry. The patented PRXB design delivers the strongest braking horsepower, greatest speed reductions and shortest stopping distances possible without the use of service brakes. It maintains optimum retarding performance by maximizing the exhaust backpressure throughout the entire RPM range. Unlike a typical exhaust brake, which requires high RPMs to work properly, the PRXB delivers constant exhaust pressure (braking) as early as 1200 RPM through to the maximum allowable RPM.
Controlled by a master ON/OFF switch, Pacbrake's exhaust brakes provide whisper quiet supplemental braking that allows service brakes to be used much less, ultimately saving you money. They have the ability to be left on all the time, making it ideal for in-city driving or for steep, downhill grades. This product pays for itself as less wear on the brake pads means fewer brake jobs.
In order to have consistent and effective braking over the entire RPM range, it is important (and necessary) to maintain constant backpressure. To achieve this, Pacbrake's patented design has incorporated an additional waste gate on the butterfly valve to regulate the amount of exhaust flow that is being passed through. The flow is controlled by a spring-loaded arm, whose pressure rating and location are key factors in the functionality of the PRXB. Located outside of the housing and away from the heat, the spring is able to maintain its strength and durability for years of proper and precise braking performance.
PRXB Exhaust Brakes: PRXB To The Test
Two trucks, one equipped with a PRXB exhaust brake and the other with our competitors exhaust brake, are traveling down a 5% grade. Both vehicles start descending at the same time while traveling at a speed of 45 MPH. With a sharp corner ahead, both vehicles activate their exhaust brake...
RESULTS AFTER 60 SECONDS
The truck equipped with the PRXB slowed to a safe cornering speed (18 MPH) in just under 1/2 mile. In that same amount of time, the truck equipped with our competitors exhaust brake traveled 450 ft MORE and was still moving at a dangerous 30 MPH. Did this truck slow down in time?
IMPORTANT NOTES:
- If your truck has been equipped with aftermarket 4" exhaust, you will need to order 2 exhaust adapters (PBC11342) to accommodate for this.
- Automatic Transmission option includes transmission lockup control.
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4.8 ★★★★★
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Product Reviews
★★★★★ 3
Gothic Star Wars
Format: Paperback
This trade paperback collects all the issues for the Screaming Citadel story spread over several titles, including the main stay Star Wars series and the Dr Aphra book. As one might expect from a story spread over different titles with different artists and writers, the presentation varies. The art is all over the place. In the Marco Checchetto-drawn initial issue, everyone’s favorite amoral artifact hunter, Dr Aphra, is a striking space vixen. But in the following issues she’s hardly recognizable as the same character--mousier, if still menacing, in her trademark Russian tanker’s hat. To a lesser degree, the same is true for the other characters, including the main SW group. It’s understandable, but a bit disconcerting.
The story centers on Dr Aphra, who, in need of a Jedi for one of her typically nefarious purposes, recruits Luke into her scheme. Unfortunately for Aphra, she’s up against a more ruthless foe in the harlequin-looking vampire-like Queen of the Screaming Citadel. Before long, the rest of the group has to show up to rescue them. It’s a gothic story, set in scary castle—not the usual Star Wars fare. There are some good points. Dr Aphra’s almost sociopathic outlook is always good for a few choice lines, the “murderous machines” Bee Tee and Triple Zero are on hand for their own gruesome commentary and some of the Queens hench-people, while not given much to do, are interestingly designed. But overall, the horror movies plotline didn’t seem much like Star Wars to me. Recommended for those who enjoy that type of story, or completists.
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Reviewed in the United States on February 27, 2018
★★★★★ 4
Luke and Doctor Aphra team up!
Format: Paperback
This is the second crossover event in the Marvel Star Wars comics. It brings the ongoing Doctor Aphra and Star Wars series together. I liked the pairing of Luke with Aphra. They play well off of each other with Luke's naive goodness and Aphra's experienced gray morality. I liked when she called him a wannabe padawan.
There are some well designed characters in this comic. The residents of the Screaming Citadel have a goth bdsm vibe. Luke even gets to dress up. I liked seeing him in something different.
I want to know more about Sana and Aphra's past!!! Please, Marvel, make a queer love story prequel!!!
The murder droids are wonderful. Having them on the same side as the "good guys" for at least the time being led to some funny situations.
The last panel intrigued me. I give this graphic novel a 4/5. I am always here for more Doctor Aphra!
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Reviewed in the United States on December 29, 2017
★★★★★ 5
Excellent mini series.
Format: Kindle
This is an excellent follow up to Vader Down. Luke Skywalker and friends take on a bigger threat than The Empire and Darth Vader that is connected to the Jedi. Luke and Dr. Aphra join forces to find the answers Like is seeking. Truly worth reading and entertaining.
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Reviewed in the United States on June 23, 2019
★★★★★ 5
Lobo is a beast.
Format: Paperback
Always as one.
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Reviewed in the United States on December 9, 2025
★★★★★ 5
Great Ride
Format: Paperback
Great and Fun story for seasoned and new fans of Justice League!
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Reviewed in the United States on November 26, 2025