Ford Genuine Fluid TA-357 High Performance Engine RTV Silicone

In this review the Ford Genuine Fluid TA-357 High Performance Engine RTV Silicone is evaluated from the perspective of someone doing engine gasketing work on Ford 3.5L, 3.7L and Mustang 5.8L (4V) engines. The bottom line: this is a purpose-built RTV that targets those specific engine applications and is worth considering if you need a factory-recommended sealant. It comes in a 5 oz cartridge that fits a standard caulking gun and the product's main selling point is its engineered compatibility with the listed engines, which reduces the risk of gasket failure when used as instructed.

Key Features

• Engine compatibility: Required for use on all 3.5L and 3.7L and Mustang 5.8L (4V) engine gasketing applications, ensuring proper material match for those engines.
• High performance formula: Formulated to provide a durable, flexible seal that resists oil and coolant leaks under engine conditions.
• Cartridge fit: Supplied in a 5 oz cartridge that fits standard caulking guns, making application familiar and controllable for DIYers and pros.
• OEM assurance: Branded as a Ford genuine fluid, which gives reassurance when matching service specifications for Ford engines.
• Sealability: Reported by users to deliver strong sealability in demanding rebuilds, including Coyote engine work.

Who It's For

This product is aimed at mechanics, technicians and experienced DIYers working specifically on Ford 3.5L, 3.7L or Mustang 5.8L (4V) engines who want a sealant that matches factory requirements. It is especially useful during head gasket work, timing cover installation, oil pan resealing and other engine gasketing jobs where a manufacturer-recommended RTV reduces compatibility risk.

Those who should look elsewhere include general-purpose users who need a multi-vehicle RTV for a wide variety of cars and light trucks, or hobbyists who want a larger-volume tube for infrequent projects; this 5 oz cartridge is sized for specific repair tasks rather than bulk shop stocking.

Pros & Cons

Pros

• Factory-specified for relevant Ford engines, reducing uncertainty about material compatibility.
• Reported strong sealability in customer feedback, including use in engine rebuilds.
• Packaged to fit a standard caulking gun for controlled application and neat bead placement.
• Perceived as good sealant quality by users in real-world use.

Cons

• Some customers question whether the product is worth its price compared with generic alternatives.
• Small 5 oz cartridge may be limiting for larger jobs or frequent shop use.

Specifications

Our Verdict

The Ford TA-357 RTV is a pragmatic choice for anyone repairing or rebuilding the specified Ford engines because it is factory-specified and users report reliable sealing performance. It represents good value for targeted engine work, though buyers doing varied or high-volume shop work may prefer larger or multi-use alternatives.

Frequently Asked Questions

Is this RTV compatible with non-Ford engines?
It is formulated and required for the listed Ford engine applications; while it will seal other surfaces as an RTV, buyers should verify compatibility for non-Ford engines.

Can the cartridge be used in any caulking gun?
Yes, the 5 oz cartridge fits standard caulking guns for typical application.

Is this enough material for a full engine rebuild?
The 5 oz size is intended for specific gasketing tasks; larger or multiple repairs may require additional cartridges.