[Perfect Fit & Compatibility] This ​ bellows is designed to perfectly fit mercruiser #1 r/mr/trs/​ gen i ii bravo i ii iii and ​. it's compatible with various mercruiser engines including 120/140 165 260 470 485 898/228 from 1978-1990 and ​ one gen ii 1991-current ​. the precise dimensions ensure seamless installation and optimal performance.
[Direct Replacement & Easy Installation] Designed to meet or exceed original equipment specifications, this bellows can be installed directly without modifications. the precise engineering ensures it functions exactly like the factory part, maintaining proper ​ pressure and preventing water intrusion in your marine engine system.
[Precise Dimensions & Quality] Measuring approximately 2 1/2 inches inner diameter at each end and 5 1/4 inches in length, this ​ tube bellow matches oem specifications perfectly. the fine workmanship guarantees tight seals and proper ​ flow, making it an ideal replacement for worn or damaged original parts.
[Performance Enhancement] This ​ bellow improves engine efficiency by maintaining proper ​ flow and backpressure. the durable construction reduces maintenance needs while the mark>-res​istant​ material extends service life. it's an essential upgrade for maintaining peak performance in your mercruiser outboard engine.
[Premium Material & Durability] Manufactured from high-grade rubber material, this ​ bellow offers exceptional wear-resistance and resistance. the robust construction ensures long-lasting performance even in harsh marine environments. its stable performance maintains ​ system integrity while withstanding extreme temperatures and constant vibration.

Spec:
Conditon: 100% Brand New
Item Type: ​ Bellows
Material: Rubber
Color: Black+Silver
Inner Diameter: Approx. 2 1/2in
Length: Approx. 5 1/4in
Part Number: 18654A1, 18-2750,
Fitment: Prefect fit for #1, R/MR/TRS/​ Gen I,II/Bravo I,II,III and ​
Fit for Mercruiser