Stainless Steel Detent Arres B4/Detent Pin/Synchronizer Part/ Key Unit in Passenger Car Gearbox

Basic Info

Packaging & Delivery

Package Size: 39.5cm*36cm*18cm

Package Gross Weight: 25kg

Product Definition

What is the Detent Arres in passenger cars?

In a car gearbox, “Detent Arres” refers to the detent mechanism, which is a component of the synchronization system in manual transmissions. The primary function of the detent mechanism is to reduce the speed difference between gears during the gear-shifting process, making gear changes smoother and faster. Here are the specific roles and characteristics of “detent arrest” in car gearboxes:

1.  Synchronization Function: The detent mechanism (ARRES) is used in the pre-synchronization system, located in the notches around the gear shift fork. The detent mechanism is preloaded with a spring, pressing against the notches on the gear shift sleeve to achieve pre-synchronization.

2.  Design and Materials: ARRES can be designed as a single-piece or a multi-piece design. The single-piece ARRES has all components rigidly connected during the manufacturing process, reducing the workload during gearbox assembly and eliminating the need for drilling holes in the gear shift fork, which reduces inventory costs. ARRES is made from high-quality materials, with steel parts that can be blackened and plastic bases that can be produced in any color.

3.  Wear and Quality Control: To maintain synchronization performance, the materials and surface design of ARRES are such that wear is minimized, thus maintaining consistent functionality throughout the entire service life of the gearbox.

4.  Shifting Feel: The spring force in ARRES can be set within a wide range, allowing the desired shifting feel to be set, even shortly before the start of mass production.

 The “detent arrest” is an important component in manual transmissions, improving shifting performance and the driver’s shifting feel through pre-synchronization of gears.

Product Advantage

1. The price is cheap and cost-effective;

2. High-quality assurance with professional technical team support;

3. Improve the performance, reliability, and service life of the gearbox used.

Process Flow：

Shell stamping --- Heat treatment --- Cleaning inspection --- Assembly riveting --- On-line inspection --- Final inspection and oiled packaging.