ZF 0636.011.403 HEXAGON SCREW for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 0636.011.403 HEXAGON SCREW is a critical fastening component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part secures internal assemblies within the gearbox, ensuring precise clamping force to maintain structural integrity under high torque loads. As a fastener within the Springs & Fasteners category, the SKU 0636.011.403 is typically installed during valve body or clutch pack reassembly. It works in conjunction with the 2094101012: TRANSMISSION HOUSING to anchor subcomponents, preventing axial movement that could compromise shift quality. This hexagon screw is machined to exact ZF tolerances, making it a direct replacement for worn or stripped fasteners in heavy-duty transmissions.

Symptoms of Failure

• Transmission fluid seepage at housing joints: When the 0636.011.403 hexagon screw loses its thread grip or becomes fatigued, it can cause micro-gaps between the 2094301036: HOUSING and mating surfaces, leading to slow oil leaks that worsen under load.
• Intermittent gear engagement delay: A loose or sheared hexagon screw allows internal components to shift, resulting in delayed clutch pack engagement and a noticeable lag when shifting from neutral to drive.
• Unusual metallic rattling from the bell housing: As the fastener loosens, it may vibrate against the 2094298057: HOUSING, producing a distinct rattle at idle that intensifies during acceleration.
• Torque converter shudder: In severe cases, a failed hexagon screw can cause misalignment of the pump housing, leading to shudder or vibration during torque converter lockup.

Technical Specifications

Compatibility

This hexagon screw is specifically designed for ZF WG-series transmissions, including the WG100, WG130, and WG131 models. It is also compatible with the WG180 and WG200 series when used in similar fastening points for the 2094301071: COVER assembly. Always verify thread pitch and length against your transmission’s service manual before installation, as variations exist between early and late production runs.

Related Components

{
“@context”: “https://schema.org”,
“@type”: “FAQPage”,
“mainEntity”: [
{
“@type”: “Question”,
“name”: “What is the ZF 0636.011.403 hexagon screw used for?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “The ZF 0636.011.403 hexagon screw is used to secure internal components within WG100, WG130, and WG131 transmissions, particularly for fastening housings and covers to prevent oil leaks and maintain gear alignment.”
}
},
{
“@type”: “Question”,
“name”: “Can the 0636.011.403 screw be reused after removal?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “ZF recommends replacing hexagon screws like 0636.011.403 with new OEM parts after removal, as torque-to-yield fasteners can lose clamping force and lead to loosening or fluid seepage.”
}
},
{
“@type”: “Question”,
“name”: “What torque specification is required for this hexagon screw?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Typical torque for the 0636.011.403 hexagon screw in WG-series transmissions is 45-50 Nm, but always consult your specific transmission service manual for exact values.”
}
}
]
}