40510-323-000
Chain cover (chain guard) for Honda CB500K and CB550K
Original part (OEM)
Not checked yet
PorkForge replacement
Not made yet
Part facts
- Original part number
- 40510-323-000R1
- Manufacturer
- Honda
- Part type
- Shields and guards
- System
- Body and sheet metal
- Notes
- Chain cover (chain guard) for Honda CB500K (1971-1973), CB550K (1974-1978). Black plastic chain cover. Number and fitment come from an aftermarket seller's replacement listing.
- Last reviewed
- Oct 28, 2026 · record pf-moto-00025
Dimensions How to measure this part
Fits these machines
| Model | Years | Notes | Evidence |
|---|---|---|---|
| Honda CB500K | 1971–1973 | — | Reported 1 |
| Honda CB550K | 1974–1978 | — | Reported 1 |
Where to find one today
| Source | Condition | Price | Stock | Checked |
|---|---|---|---|---|
| Old Bike Barn 1 | New, aftermarket | $139.95 | In stock | Oct 28, 2026 |
Why it is hard to get
- Market evidence: An aftermarket seller makes and stocks a non-Honda replacement, which suggests the original is hard to get and sells steadily. 1
Can this part be made again?
Not eligiblePhysical replacement
Chain guard protects the rider from the moving drive chain: a guard against moving parts, which PorkForge does not make.
Not eligibleSTL / FreeCAD file
We will not offer files for this part.
Sources
- Old Bike Barn product page: Honda 40510-323-000 Chain cover (chain guard)
- Old Bike Barn collection: engine covers, side covers and body covers
Not affiliated with or endorsed by Honda or its successors. The name is used only to identify compatibility. Part numbers are shown for reference. Check fit against your own machine. Spot a mistake?
Verification checklist (3 of 8 met)
- ✕ OEM part number not yet verified from an OEM or dealer source
- ✕ Cited by one website only, and not an OEM or dealer source
- ✓ At least one compatible model with a source
- ✕ 1 kinds of fact beyond the name (aftermarket prices); 3 needed
- ✕ Original availability not yet checked
- ✓ Text and title are distinct
- ✓ No editorial hold
- ✕ Not yet reviewed and signed off for search
Related parts
| Part no. | Part | Make | Fits | Original | PorkForge | Sources |
|---|---|---|---|---|---|---|
| 83600-323-030 | Right side cover | Honda | CB500K, CB550K | Not checked | Research only | 2 |
| 83700-323-030 | Left side cover | Honda | CB500K, CB550K | Not checked | Research only | 2 |
| 37236-426-000 | Speedometer under-plate (lower cover) | Honda | CX500C, CX500D, CB550K, GL500 | Available | Research only | 3 |
| 37246-404-000 replaced by 37246-426-000 | Tachometer under-plate (lower cover) | Honda | CB750K7, CX500C, CX500D, CB550K, GL500 | Available | Research only | 3 |
| 37600-377-018 | Pilot indicator light cover (front and rear halves) | Honda | CB400F, CB550F, CB550K, CB750 | Not checked | Research only | 2 |
| 83600-323-020 | Right side cover | Honda | CB500K | Not checked | Research only | 1 |
| 83700-323-020 | Left side cover | Honda | CB500K | Not checked | Research only | 1 |