Description
Product Overview
The ARP 300-8242 rocker arm adjuster is a precision‑engineered component designed for performance‑oriented engines. Constructed from hardened steel and finished with a durable painted coating, it offers excellent resistance to wear and corrosion. With dimensions of 6 x 1 x 10 inches and a weight of just 1.16 pounds, the adjuster provides a lightweight yet robust solution for fine‑tuning valve clearance. Its vehicle‑specific design ensures a perfect fit on a wide range of applications, eliminating the need for custom modifications.
![[Product front view showing all components]](https://www.norano.store/wp-content/uploads/2026/06/67e64a97a191470480809afbb89688fa.jpg)
Usage
This adjuster is ideal for both street and track use. Whether you are rebuilding a classic engine or upgrading a modern performance build, the ARP 300-8242 delivers consistent adjustment and reliable operation. It is suited for enthusiasts who demand precise valve timing, as well as professional mechanics performing routine maintenance on high‑performance vehicles.
Why Choose Us
ARP is a trusted name in automotive performance, known for rigorous testing and superior material selection. Each adjuster undergoes strict quality control to meet exacting standards, ensuring you receive a component that performs under extreme conditions. Our commitment to customer support includes detailed installation guides and responsive technical assistance.
Key Features
- Hardened steel construction provides long‑lasting strength and wear resistance.
- Painted exterior protects against corrosion and enhances visual appeal.
- Vehicle‑specific fit eliminates guesswork and reduces installation time.
- Lightweight design improves overall engine balance without sacrificing durability.
- Dedicated ARP support team offers installation help and warranty service.
FAQ
What engines are compatible with the 300-8242 adjuster?
The adjuster is designed for a range of performance engines that use standard rocker arm mounting patterns. Refer to the ARP fit guide for exact vehicle matches.
Do I need special tools to install this adjuster?
Installation requires common hand tools such as a torque wrench and socket set. Detailed torque specifications are included in the product manual.
Is the painted finish durable under high heat?
Yes, the high‑temperature paint is formulated to withstand the heat generated in performance engines, maintaining its protective qualities over time.
Can I use this adjuster for street‑legal applications?
Absolutely. The adjuster meets OEM specifications and is suitable for both street and track use.
What warranty does ARP provide?
ARP offers a limited lifetime warranty against material defects, backed by their customer service team.





Energy Design Sacred Geometry eBook Kindle Self Help Guide
ARP Rocker Arm Stud Kit 135-7102 Purple 7/16-20 Grade 8.8 Chrome Moly
Rocker Arm Shaft 0200 by T&D Machine Products Performance Engine Part
Reviews
There are no reviews yet.