BCBC MR-1266 Engine Rocker Arm - Exhaust 1-3

Overview

The Melling MR-1266 engine rocker arm is a standard replacement part for select Nissan valve train applications. Built from cast steel with an anti-rust finish, it is designed for shaft-mounted, self-aligning operation in non-roller setups.

Compatible With Nissan Pickup, Nissan Axxess, Nissan D21, Nissan Stanza, and Nissan 240SX applications that use the specified exhaust valve positions. This part cross-references Monroe Shocks & Struts (e.g., 40-9099, 180-1266) for the same application.

• Cast steel construction for valve train durability
• Anti-rust finish for added surface protection
• Self-aligning design for proper rocker arm tracking
• Standard replacement for rebuild and service work

Detailed Description

Melling MR-1266 is an engine rocker arm built for exhaust valve train service in select Nissan engines. The shaft mounting type and self-aligning design support correct geometry in applications that call for a non-roller rocker arm, while the cast steel construction provides a solid replacement option for rebuilds and repairs. The MR-1266 is listed for Nissan Pickup, Nissan Axxess, Nissan D21, Nissan Stanza, and Nissan 240SX fitments, making it a focused solution for specific engine service needs. Melling MR-1266 is also referenced by interchange numbers including 40-9099 and 180-1266.

Common Uses

• Replacing a worn or noisy rocker arm
• Restoring valve train motion after engine wear
• Addressing inconsistent exhaust valve operation
• Supporting engine rebuild service on listed Nissan applications

Installation Notes

Verify the engine’s rocker arm style, mounting type, and exhaust valve position before installation. This part is specified for shaft-mounted, self-aligning, non-roller applications, so matching the original design is important for correct operation. Inspect related valve train components during service and replace any worn parts as needed.

Quality Assurance

Melling supplies rocker arms for domestic and import applications and recommends replacing rocker arms and related components during engine rebuilds to support long service life and efficient performance.