Caps, Plugs, and Blockoffs
Anodized caps, plugs and blockoffs for sealing unused ports.
FCO AN Caps / Blockoffs

Anodized flare caps and blockoffs for sealing unused AN ports and open fittings — pressure-tight and reusable.
| Options | Qty | |||||
|---|---|---|---|---|---|---|
![]() | CF-FCO-04-000-000-XX | -4 AN Cap / Blockoff | -4AN Female Flare | $6.49Details | ||
![]() | CF-FCO-06-000-000-XX | -6 AN Cap / Blockoff | -6AN Female Flare | $6.49Details | ||
![]() | CF-FCO-08-000-000-XX | -8 AN Cap / Blockoff | -8AN Female Flare | $8.49Details | ||
![]() | CF-FCO-10-000-000-XX | -10 AN Cap / Blockoff | -10AN Female Flare | $9.49Details | ||
![]() | CF-FCO-12-000-000-XX | -12 AN Cap / Blockoff | -12AN Female Flare | $9.49Details | ||
![]() | CF-FCO-16-000-000-XX | -16 AN Cap / Blockoff | -16AN Female Flare | $9.49Details |
FBP AN Flare Blockoff Plugs

- Available in a high-gloss anodized Black
- Precision 6061-T6 billet aluminum construction
- Securely seals unused AN ports with a 37° flare seat
- Compatible with fuel, oil, coolant, and power steering systems
- Best installed using our AN fitting assembly tools
| Options | Qty | |||||
|---|---|---|---|---|---|---|
![]() | CF-FBP-04-000-000-XX | -4AN Flare Blockoff Plug | -4AN Male Flare | $4.99Details | ||
![]() | CF-FBP-06-000-000-XX | -6AN Flare Blockoff Plug | -6AN Male Flare | $5.49Details | ||
![]() | CF-FBP-08-000-000-XX | -8AN Flare Blockoff Plug | -8AN Male Flare | $5.99Details | ||
![]() | CF-FBP-10-000-000-XX | -10AN Flare Blockoff Plug | -10AN Male Flare | $6.99Details | ||
![]() | CF-FBP-12-000-000-XX | -12AN Flare Blockoff Plug | -12AN Male Flare | $8.99Details | ||
![]() | CF-FBP-16-000-000-XX | -16AN Flare Blockoff Plug | -16AN Male Flare | $11.99Details |
FPO Hex Plugs

- Precision-cut tapered threads for a secure seal
- Ideal for sealing unused fuel, oil, coolant, and hydraulic ports
- Compatible with high-pressure automotive and motorsport applications
| Options | Qty | |||||
|---|---|---|---|---|---|---|
![]() | CF-FPO-00-012-000-XX | 1/2" NPT Hex Plug | 1/2 NPT Male | $11.99Details | ||
![]() | CF-FPO-00-016-015-XX | M16x1.5mm Plug w/ Washer | -0AN Male ORB | $11.99Details | ||
![]() | CF-FPO-00-018-000-XX | 1/8" NPT Hex Plug | 1/8 NPT Male | $5.99Details | ||
![]() | CF-FPO-04-000-000-XX | -4 AN ORB Plug w/ O-Ring | -4AN Male ORB | $8.99Details | ||
![]() | CF-FPO-06-000-000-XX | -6 AN ORB Plug w/ O-Ring | -6AN Male ORB | $9.99Details | ||
![]() | CF-FPO-08-000-000-XX | -8 AN ORB Plug w/ O-Ring | -8AN Male ORB | $9.99Details | ||
![]() | CF-FPO-08-014-000-XX | -8 AN ORB Plug to 1/4" NPT | -8AN Male ORB, 1/4 Female NPT | $14.99Details | ||
![]() | CF-FPO-08-018-000-XX | -8 AN ORB Plug to 1/8" NPT | -8AN Male ORB, 1/8 Female NPT | $14.99Details | ||
![]() | CF-FPO-10-000-000-XX | -10 AN ORB Plug w/ O-Ring | -10AN Male ORB | $9.99Details | ||
![]() | CF-FPO-10-000-002-XX | -10 AN ORB Plug w/ O-Ring (Slimline) | -10AN Male ORB | $9.99Details |
FPM Metric Hex Plugs (O-Ring)

Metric hex plugs that seal on an o-ring, not the threads — no sealant, no tape, no weeping metric ports.
| Options | Qty | |||||
|---|---|---|---|---|---|---|
![]() | CF-FPM-20-B20-015-XX | Metric M20x1.5 Hex Plug w/O-Ring | M20x1.5 Male | $14.99Details |
THP NPT Hex Head Plugs

Tapered-thread NPT hex plugs for sealing unused fuel, oil and coolant ports — wrench-tight and reusable.
| Options | Qty | |||||
|---|---|---|---|---|---|---|
![]() | CF-THP-00-014-000-XX | 1/4" NPT Hex Head Plug | 1/4 NPT Male | $5.99Details |













