Athena S410195006010U Cylinder base gasket FR/RR .015" RCS 5-pack – HD Evo BT 84-99, Sportster 86-22

Reliable Seal and Perfect Fit: Athena S410195006010U Cylinder Base Gasket FR/RR .015" RCS 5-pack – HD Evo BT 84-99, Sportster 86-22

Keep your Harley running smooth and leak-free with the Athena S410195006010U Cylinder base gasket FR/RR .015" RCS 5-pack. Designed specifically for HD Evo BT (1984-1999) and Sportster models (1986-2022), this gasket set ensures a tight, durable seal between your cylinder and engine block. Its precise thickness of .015" helps maintain optimal compression, preventing costly oil leaks and engine damage. Affordable and built to last, this gasket pack is a must-have for every serious biker looking to maintain peak engine performance without breaking the bank.

Features and Benefits of Athena S410195006010U Cylinder Base Gasket FR/RR .015" RCS 5-pack – HD Evo BT 84-99, Sportster 86-22

• Perfect Thickness: .015" thickness ensures ideal compression and sealing for smooth engine operation.
• Durable Material: Crafted from advanced composite materials that resist heat and pressure for long-lasting reliability.
• Exact Fit: Engineered specifically for Harley-Davidson Evo BT (1984-1999) and Sportster (1986-2022) models for hassle-free installation.
• 5-Pack Value: Comes in a convenient 5-pack, giving you spares for future maintenance or multiple bikes.
• Leak Prevention: Creates a tight seal to stop oil and gas leaks, protecting your engine and improving performance.

Upgrade your engine’s reliability with the Athena S410195006010U Cylinder base gasket FR/RR .015" RCS 5-pack—a smart, affordable choice for riders who demand precision and durability on every ride.

S410195006010U 3" to 3-1/2" bore. Front/rear. Type 'B'. 0.4mm (.015") RCS (Rubber Coated Steel). Gasket with an embossed steel core with a .001" thick coating of heat resistant nitrile rubber on both sides. OEM replacement reference 16774-86C, 16774-86D, 16789-04. Note: Type 'A' and 'B' Evolution base gaskets explained. There are 2 types of cylinder base gaskets for Evolution models available. For convenience sake we call them 'type A' (early style) and 'type B' (late style). - Type A' gasket: Was introduced on the 1984 Evolution Big Twin models, and can be used on all of the 84-99 1340cc Evo models and will follow the contours of the cylinder base perfectly. They will fit 86-22 Evo XL, but stick out at the cylinder base. This can be a problem with silicone beaded base gaskets. - Type B' gasket: Was introduced on Evolution XL Sportster models in 1986, and will fit all Evo XL models, but also all 84-99 Evo 1340cc models although the Big Twin cylinder base is a bit larger than the gasket. The 'type B' is the only gasket type that 'The Factory' supplied from 1986 onwards for both Evo Big Twin and Evo XL Sportster models. Both type 'A' and type 'B' have identical inner bore diameter, oil hole and stud hole locations. Gaskets for front & rear cylinder are identical. Only difference between the 'A' & 'B' gaskets is the outside perimeter.