.48 & 7.5 R/C ENGINE
PARTS LIST

9-21-2021
Aero
Pro Outboard
Semi-Pro Outboard
Ducted Fan
Inboard
PN 4800
PN 7500
PN 7510
PN 4825
PN 7525

DF - ducted fan / OB - outboard

AERO HISTORY

The MUFFLER CAP is aluminum, the nylon one was discontinued in 1999.

Only the first 100 engine had aluminum back covers,
everything else has Nylon since 1998

Note: Nylon is actually better if the connecting rod rubs against it it won't ingest Aluminum Oxide through the engine which reduced glow plug life.

New
Part No.
Old
Part No.
Description
Model
Model
No.
Snap Ring DF
4825
Crankcase Aero
4800
Crankcase DF
4825
Crankcase Pro OB
Semipro OB
7500
7510
Head (Gold) Aero
4800
Finned Head DF
4825
Head Button/combustion chamber Semipro OB
7510
Cooling jacket Semipro OB
7510
Air Cooled Head Pro OB
7500
Wrist Pin Aero
DF
Pro OB
Semipro OB
4800
4825
7500
7510
Connecting Rod Aero
DF
Semipro OB
4800
4825
7510
Connecting Rod Pro OB
7500
Crankshaft Aero
4800
Crankshaft DF
Inboard
4825
7525
Crankshaft Pro OB
Semipro OB
7500
7510
Ball Bearing - PTO Top or Bottom Pro OB
Semipro OB
7500
7510
Ball Bearing - Front - High RPM Aero
DF
Inboard
Pro OB
Semipro OB
4800
4825
7525
7500
7510
Bearing (Rear) Aero
Pro OB
Semipro OB
4800
7500
7510
Ball Bearing - High R.P.M. (rear) DF
Inboard
4825
7525
Drive Collet Aero
DF
Pro OB
Semipro OB
4800
4825
7500
7510
Prop Driver Aero
4800
Prop Drive DF
4825
Flywheel Semipro OB
7510
Flywheel (Red) Pro OB
7500
Back Plate Assembly w/ Ball Bearings Pro OB
7500
Back Cover w/O-ring Aero
4800
Back Plate Only (PTO) Pro OB
Semipro OB
7500
7510
Back Plate w/Drum Rotor DF
4825
Prop Stud Kit 1/4" - 28 Thread, Washer & Nut Aero
4800
Prop Washer, Stud (2 inch) & Nut DF  
Prop Stud DF
4825
Screw set Aero
DF
4800
4825
Engine screw set Semipro
7510
Muffler Screws Aero
4800
Lower Outboard OB
-
Adapter screws -
-
Socket Head Screw (Flywheel) Pro OB
Semipro OB
7500
7510
Wrist Pin Clip - 2 ea. Aero
DF
Pro OB
Semipro OB
4800
4825
7500
7510
O-ring set, water cooled head -
-
Back Plate O-ring - 2 ea. Aero
4800
Mixture disk O-ring set -
-
O-ring for Exhaust Adapter DF
4825
Gasket - Carburetor Seal (2ea) DF
Pro OB
Semipro OB
4825
7500
7510
Carburetor O-ring (2ea) Aero
4800
Draw Bar

Aero
DF
Pro OB
Semipro OB

4800
4825
7500
7510
Head Shim Aero
4800
Head Shim Pro OB
Semipro OB
Inboard
DF
7500
7510
7525
4825
Muffler Gasket Pro OB
7500
Muffler Aero
4800
Muffler Rear Cap Aluminum Aero
4800
Muffler baffle cap, stud kit -
-
Exhaust Extension Pipe DF
4825
Bisson Pitts Muffler Aero
4800
Pipe Adapter - 0 DF
4825
Exhaust Adapter (w/o O-ring, uses 9023 O-ring) Semipro OB
7510
Muffler Pro OB
7500
Exhaust Adapter Pro OB
7500
Piston and Sleeve Aero
4800
Piston & Sleeve DF
4825
Piston & Sleeve Assembly Pro OB
Semipro OB
7500
7510
Fitting - Inlet Semipro OB
7510
Lower End Assembly - Complete Semipro OB
7510
Lower End Assembly - Complete Pro OB
7500
Lower End Halves - Matched (Set Only) Semipro OB
7510
Lower End Halves - Matched (Set Only) Pro OB
7500
Flex Shaft Pro OB
Semipro OB
7500
7510
Water Intake Tube Assembly Semipro OB
7510
Hinge Pin - Stainless Pro OB
Semipro OB
7500
7510
Prop Nut - #10-32 Thread (2 per bag) Pro OB
Semipro OB
7500
7510
Fitting - Outlet Semipro OB
7510
Steering Arm Pro OB
Semipro OB
7500
7510
Tubing - Teflon - Flex Shaft Guide Pro OB
Semipro OB
7500
7510
Prop Shaft Assembly Pro OB
Semipro OB
7500
7510
PTO Shaft Pro OB
Semipro OB
7500
7510
Prop Drive Dog Pro OB
Semipro OB
7500
7510
Hinge w/ Bushing Pro OB
Semipro OB
7500
7510
Maintenance Kit - (Lower End Only) Screws (5), Flex Shaft, Teflon Tube & Lube Pro OB
Semipro OB
7500
7510
K&B Carburetor Aero
4800
Carburetor Maintenance Kit DF
Pro OB
4825
7500
Carburetor Complete Semipro OB
7510

.453 Carburetor Complete

Pro OB
DF
7500
4825
Carburetor Body w/Carburetor Barrel Aero
4800
Carburetor Body DF
Pro OB
4825
7500
Carburetor Body Semipro OB
7510
Carburetor Barrel DF
Pro OB
4825
7500
Carburetor Barrel Semipro OB
7510
Snap Ring Pro OB
Semipro OB
7500
7510
Fitting, Pressure Aero
4800
Fuel Fitting Inlet Pro OB
DF
7500
4825
Carburetor Control Arm -
-
Low Speed Idle Disk w/ O-ring Aero
4800
Low Speed Disk DF
Pro OB
Semipro OB
4825
7500
7510
Needle Valve Bracket Aero
4800
Throttle Cable Bracket Pro OB
Semipro OB
7500
7510
Needle Valve Kit Aero
4800
Carburetor Maintenance Kit Aero
4800
Maintenance Kit (all screws & O-ring) DF
4825
Flex Shaft Lube Pro OB
Semipro OB

7500
7510

Mixture Control needle Valve Pro OB
Semipro OB
7500
7510
Carburetor Maintenance Kit Semipro OB
7510
Remote Needle Valve Assembly Aero
DF
Pro OB
Semipro OB
4800
4825
7500
7510