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COMP Cams

COMP Cams Rkr Arm Adjusting Screw For 1

MPN: 1321S-1 Catalog #: 001107530 Category: Engine Hardware Check Vehicle Fitment

Product Details

Made from SAE 8620 chromemoly Steel - Rocker bodies are heat-treated to obtain maximum strength and stiffness - Unique oil system lubricates all critical parts for long lasting service. - Big Block Chrysler system (part #1321-16) includes a special adjuster which allows the use of conventional ball ended pushrods.

273, 360, 318, AMC, Dodge, Mopar, Plymouth, Dart, Road Runner, Charger, Challenger, 383, 400, 440, 426, HEMI, 426 Wedge, 426 HEMI, RB, B, HEMI, 392, Chrysler, LA

This adjuster screw replaces the screw that comes with our 1621 and 1622 shaft-mount rocker systems for Chrysler 273-360 and 383-440.

Replacement Screw for 1621/1622 Chrysler 273-360; 383-440 Shaft Mount Rocker Kit

1 screw required per rocker. 16 screws required per engine.

Screw Chrys 273-360 383-440 Shaft Rocker

COMP Cams Rkr Arm Adjusting Screw For 1

Vehicle Fitment

Universal or product-specific fitment. Please review the product details and contact us if you need help confirming fitment before ordering.

Engine Compatibility

Mopar - BBMMatched variant: B/RB

Mopar B/RB Big Block; 383/400/413/426W/440

Mopar - Hemi Gen2Matched variant: 426 Hemi

1964–1971 426 Hemi; Race/Street Hemi

Nissan - RBMatched variant: RB

RB25/RB26 inline-6

Fitment note: Engine compatibility is provided as a guide. Please verify all fitment details before ordering.

Product Specs

Brand
COMP Cams
Part Number
1321S-1
Catalog Number
001107530
Product Line
Comp Cams Uncategorized
Category
Engines & Parts
Type
Engine Hardware
UPC / Barcode
036584002390
Vendor Product Category
Engine Components
Vendor Product Subcategory
Engine Hardware
Length
4.10 in
Width
1.30 in
Height
0.65 in
Weight
0.04 lb
Units Per SKU
1
Freight / LTL
No
Ship Alone
No
Air Restricted
No
Prop 65
Y
CARB Approved
Yes
Clearance Item
No

Shipping & Availability

Current status 75 Available - Ready to ship
Estimated timing Usually ships within 24hrs

This item is showing available inventory. Most in-stock performance parts ship quickly, but timing can vary by warehouse, vendor cut-off time, holidays, and carrier pickup.

PROP 65 WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Inventory shown: 75 available as of 6/3/2026.

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