Select Your Region
- Manufacturer: DuPont
- Product Line: MOLYKOTE® Automotive
- Product: MOLYKOTE® Automotive
- Industries:
- Authorized Countries: Canada | United States
MOLYKOTE® G-407 Anti-Fretting Grease
MOLYKOTE® G-407 Anti-Fretting Grease is a PAG-based, green grease engineered specifically for floating brake caliper guide pins and other metal-to-metal joints that see constant micro-movement. It is formulated to minimize fretting corrosion, stick–slip, and noise in brake hardware while maintaining excellent compatibility with EPDM boots and other common elastomers. With a wide service temperature range from -40 °C to 150 °C, G-407 keeps caliper pins moving freely from cold starts on winter mornings through repeated high-temperature braking. Low bleed and evaporation mean the grease stays where you put it instead of migrating onto pads, rotors, or friction surfaces. At the same time, robust oxidation resistance and corrosion protection help extend component life in salt, moisture, and road-splash environments. If you are dealing with seized caliper pins, uneven pad wear, or boot compatibility concerns, MOLYKOTE® G-407 gives you a purpose-built anti-fretting solution worth reviewing with a ChemPoint braking specialist.
Quantity
Documents
- Manufacturer: DuPont
- Product Line: MOLYKOTE® Automotive
- Product: MOLYKOTE® Automotive
- Industries:
- Authorized Countries: Canada | United States
Manufacturer
Product Line
Product
Industries
Authorized Countries
Canada
United States
Overview
MOLYKOTE® G-407 Anti-Fretting Grease is a polyalkylene glycol (PAG) based, NLGI 2-type grease designed for metal-to-metal pairings such as guide pins in automotive brake calipers. The PAG base oil provides excellent thermal and oxidative stability, low residue formation, and very good compatibility with common automotive elastomers, particularly EPDM rubber used in caliper dust boots and seals. Thickened to a penetration range of 265–305 (unworked and worked), G-407 offers a balanced consistency that stays in place on vertical and horizontal surfaces while still flowing enough under shear to wet and protect the entire pin surface.
The grease is specifically positioned as an anti-fretting lubricant for metal/metal interfaces that experience small-amplitude oscillations, vibration, or micro-sliding. In floating brake calipers, these conditions occur at the guide pins and sleeves as the caliper reacts to braking torque and suspension movement. Without the right lubricant, these joints can develop fretting corrosion, stick–slip, and eventually seizure, leading to uneven pad wear, brake drag, and noise. G-407 forms a stable lubricating film that cushions these micro-movements, limits wear debris formation, and protects against moisture-driven corrosion.
The wide service temperature range of -40 °C to 150 °C allows G-407 to support consistent sliding torque across typical automotive environments, including cold-climate operation and elevated brake system temperatures. Low-temperature torque tests at -20 °C show controlled starting and running torque, which translates to predictable caliper motion during cold starts. At the high end of the range, the grease maintains structure (dropping point > 230 °C) and resists bleed and evaporation (both < 5% at 150 °C), helping prevent dry-out or migration under repeated brake heating cycles.
Beyond caliper pins, MOLYKOTE® G-407 can be used as a lubricant and corrosion protectant for other metal-to-metal joints in brakes and chassis assemblies where elastomer compatibility and fretting resistance are critical. ChemPoint can support you in qualifying G-407 as your standard caliper pin grease across platforms or in targeted programs where seized pins, boot degradation, or corrosion are driving warranty cost and NVH complaints.
Features & Benefits
- PAG (polyalkylene glycol) base oil
- Delivers excellent oxidation stability, low residue formation, and very good compatibility with common automotive elastomers such as EPDM, helping protect dust boots and seals over time.
- Anti-fretting design for metal-to-metal joints
- Formulated specifically to minimize fretting corrosion and wear in metal/metal pairings like brake caliper guide pins that see constant micro-movement and vibration.
- Wide service temperature range (-40 °C to 150 °C)
- Supports smooth sliding and consistent torque from cold-climate starts to elevated brake temperatures, reducing the risk of pin seizure across real-world duty cycles.
- Good corrosion protection
- Protects steel pins, sleeves, and bracket bores from rust and corrosion, even in the presence of moisture, de-icing salts, and road splash typical of brake environments.
- Good elastomer compatibility
- Tested with EPDM and other elastomers to limit volume swell and degradation, helping maintain dust boot integrity and sealing performance over the life of the brake caliper.
- Low bleed and evaporation (< 5% at 150 °C)
- Keeps the grease where it is applied instead of migrating onto pads, rotors, or friction surfaces, helping preserve braking performance and avoid contamination-related issues.
- Stable consistency (penetration 265–305, NLGI 2-type)
- Provides a workable, stable grease body that is easy to apply by hand or grease gun yet resists being flung off or displaced during braking and suspension movement.
- Resistance to oxidation
- Maintains lubricating properties over extended time and temperature exposure, supporting long service intervals without hardening or forming deposits on critical sliding surfaces.
Problems Solved
Seized or sticking brake caliper guide pins that cause uneven pad wear, brake drag, and pull
MOLYKOTE® G-407’s anti-fretting formulation and PAG base keep pins freely sliding over time, reducing the risk of seizure and helping maintain even pad loading.
Boot swelling, cracking, or degradation caused by incompatible greases
The elastomer-compatible PAG chemistry helps protect EPDM dust boots and seals, avoiding swell or softening that can let contaminants into the guide pin bore.
Corrosion and fretting at caliper pins in high-moisture, salted-road environments
G-407 combines corrosion inhibitors with an anti-fretting film to limit rust and micro-wear where metal surfaces move under vibration, protecting hardware in harsh climates.
Grease migration onto pads or rotors that leads to reduced friction and warranty concerns
Low bleed and evaporation at 150 °C help keep lubricant confined to the pin and bore interface, reducing the chance that excess grease will travel into the friction zone.
Inconsistent caliper motion and noise at low temperatures
Controlled low-temperature torque and stable NLGI 2-type consistency support predictable pin movement and help reduce cold-start sticking, judder, or clunking linked to guide pin issues.
ChemPoint Is Here to Help
Are you in the correct region?
We’ve detected that you are located in a different region than the region selected on the website. Would you like to change your region?
Current Region: English - United States
