Triumph Bonneville Tiger Billet Primary Inspection Plug(s) PN# 71-3895/96 B

Triumph billet primary inspection plug to replace 71-3895 (plug) and 71-3896 (O-ring) as used on 1973 onwards T140 Bonneville, TR7 Tiger and other Triumph models.Keep your classic Triumph 750 primary cover leak‑free and looking sharp with this billet primary inspection plug set, designed as a direct replacement for OEM 71‑3895 (plug) and 71‑3896 (O‑ring). Machined from quality billet material, this inspection cap offers a more durable, corrosion‑resistant alternative to the original cast plug while maintaining correct factory fitment on Triumph T140 Bonneville, TR7 Tiger and other 750 chaincase covers from 1973‑on.

The primary inspection plug threads into the chaincase / primary cover inspection port, allowing access for primary fluid checks, clutch adjustment and general inspection while sealing with the included O‑ring to help prevent seepage around the cap. This set is ideal for riders who are already inside the primary for service or restoration and want to replace tired, damaged or missing original plugs with a clean, billet upgrade that still uses the correct Triumph part numbers for fitment cross‑reference.

Applications include 750‑cc Triumph TR7 Tiger and T140 Bonneville models using inspection cap 71‑3895 and O‑ring 71‑3896 on the primary chaincase cover; always confirm parts by number and model before ordering. Whether you are finishing a full restoration or just cleaning up a rider, this billet primary inspection plug and seal set adds a final polish to the drive‑side of the engine while helping keep primary oil where it belongs.

Key Features Summarized

• Direct replacement for Triumph 71‑3895 inspection plug and 71‑3896 O‑ring.
  
• Fits 1973‑on Triumph T140 Bonneville, TR7 Tiger and other 750 primary chaincase covers using these part numbers.
  
• Precision billet construction for improved durability and appearance versus stock cap.
  
• O‑ring seal helps reduce primary oil weep around inspection port.
  
• Ideal upgrade during primary service, clutch adjustment or restoration work.

The product images shown are for illustrative purposes only and may not be an exact representation of the product received. Manufacturers occasionally make minor cosmetic changes to items, such as color, finish, label, or design. These changes do not impact the item’s function or compatibility. Please contact us if you have specific concerns regarding appearance.