Description
Overview:
The Plug for Crankcase fitted to Petter PJ3/PJ4 Diesel Engines is a genuine Lister Petter metal plug that seals the crankcase opening to prevent oil leaks and pressure loss. Built from durable metal, it is suitable for heavy-duty use in stationary and mobile diesel applications using Petter PJ3 or PJ4 engines. Supplied as unused old stock, it may show light tarnishing or storage marks but remains fully serviceable. The plug features a 1/2" BSP thread (12.7 mm nominal) with a precise 15 mm fit as specified, making it straightforward to match to the correct port. Using a correctly sealed crankcase plug helps maintain lubrication integrity, protects internal components, and supports reliable running and easier maintenance on classic Petter equipment.
Key Features:
- Genuine Lister Petter part for assured compatibility with PJ-series engines
- 1/2" BSP (12.7 mm nominal) thread for use with standard British Standard Pipe fittings
- Positive oil-tight seal to reduce leakage and maintain crankcase integrity
- Durable metal construction suited to workshop and site environments
- Unused vintage stock; may show tarnish or storage dust without affecting function
- Simple to fit with standard tools; use suitable oil-resistant sealant or PTFE where required
- Reliable replacement for missing, worn, or damaged crankcase plugs
- Supports correct crankcase pressure and lubrication performance
- Resistant to common engine fluids and operating temperatures
- Practical spare for restoration, overhaul, and preventative maintenance
Typical Applications:
Used to blank or seal crankcase ports on Petter PJ3 and PJ4 diesel engines found in generators, pumps, compressors, welders, agricultural and construction machinery. Ideal during rebuilds, servicing after gasket or seal replacements, and when addressing oil seepage or damaged threads. Suitable as a long-term fix or as a dependable spare in a service kit.
Also known as:
BSP blanking plug, threaded bung, crankcase sealing plug, oil gallery plug, engine blank plug, BSP screw plug, block-off plug, pipe thread plug, crankcase closure fitting.
Fits Models:
PJ3, PJ4
Alternate Part Numbers:
CA 142
Product Specifications
| L&S Part No. | CA142 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Lister Petter |
| Unit of Sale | 1 |
| Size | 1/2" BSP |
| Machine Type | Engines |
| Fits Brands | Lister Petter |
| Key Features | - Genuine Lister Petter part for PJ3/PJ4 engines - 1/2" BSP thread for standard fittings - Durable metal construction for heavy-duty use - Positive oil-tight seal maintains crankcase integrity - Resistant to engine fluids and temperatures |
Reviews
Ask a Question
Compatibility
Customers also bought
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£78.14 £65.12 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£79.52 £66.27
Related Products
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£78.14 £65.12 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£79.52 £66.27
