Chrysler RTV Silicone Engine Sealant — Black 3 oz Tube, OEM-Grade Oil-Resistant Flexible Seal

Chrysler Genuine 4883971 is a black RTV silicone rubber adhesive formulated to form oil-resistant, flexible seals on engine components — supplied in a 3 oz. tube for workshop and DIY repairs.

This OEM-grade RTV (room temperature vulcanizing) silicone sealant is made specifically for automotive applications where exposure to engine oil, heat cycling, and vibration demand a resilient bond. Chrysler designed this product to replace or reseal gaskets, flange joints, and mating surfaces on engines while maintaining adhesion and seal integrity over time. It comes black in color to match many engine components and is packaged in a convenient 3 oz. tube for controlled bead application.

What surfaces and parts can I use this sealant on?

The 4883971 RTV is suitable for sealing metal-to-metal, metal-to-plastic, and common engine substrate joints where oil exposure occurs. It’s intended for valve covers, oil pans, timing chain covers, water pump flanges (non-coolant facing), and other oil-exposed mating surfaces. Avoid use where continuous coolant contact or high-pressure hydraulic sealing is required unless specified by service instructions.

• Valve covers and oil pans — provides flexible gasket replacement.
• Engine case seams and timing covers — resists oil and vibration.
• Mating surfaces of metal and compatible plastics — maintains adhesion.
• Not for continuous coolant passages or high-pressure hydraulic fittings.

How do I apply the 3 oz tube for best results?

Preparation is key: clean oil, old gasket material, and contaminants before applying a uniform bead. Apply a continuous bead to the mating surface, allow the recommended primer/curing timeframe if instructed, assemble parts, and torque to manufacturer specs. Small tube format gives control for repairs and touch-ups without excess waste.

• Clean surfaces with solvent and remove old gasket residue.
• Apply a consistent bead; avoid excessive gaps or thin spots.
• Assemble within the working time and torque to spec.
• Cure time varies with thickness and environment — follow instructions.

What performance can I expect regarding oil resistance and durability?

This black silicone RTV is formulated to retain adhesion and sealing when in regular contact with engine oil, and it tolerates engine temperature cycling and vibration. It creates a flexible, rubber-like seal that resists shrinkage and hardening that causes leaks. For long-term reliability, use genuine OEM products and follow service guidelines for surface prep and assembly.

• Oil-resistant formulation maintains seal integrity under oil exposure.
• Flexible after curing to accommodate vibration and thermal movement.
• Designed to resist shrinkage and maintain adhesion over time.
• OEM formulation aligns with Chrysler service expectations.

Who is this for: mechanics, home garage DIYers, and service technicians replacing or resealing oil-exposed engine components who want an OEM-specified product. The 3 oz tube size is ideal for spot repairs, valve cover and oil pan reseals, and any small-to-medium sealing task where a black, oil-resistant RTV is preferred. Use it when the vehicle manufacturer or repair procedure calls for a silicone adhesive sealant compatible with engine oil exposure.