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Premium 100/6 & 3000 Aluminium Oil Sump - UK cast & CNC LM25 alloy - CapeSport

Big Healey
Part no:
ENG664
Product name:
Premium 100/6 & 3000 Aluminium Oil Sump - UK cast & CNC LM25 alloy - CapeSport
Additional information:
Description:

This Premium CapeSport aluminium oil sump is designed for Austin Healey 100/6 and 3000 BN4–BJ8 six-cylinder models. UK-cast in LM25 aluminium alloy and fully CNC-machined, it features accurately machined sealing faces and integral cast fins.

UK-Cast and CNC-Machined

  • UK-cast from LM25 aluminium alloy.
  • Fully CNC-machined for consistent dimensions and fit.
  • Machined sealing faces for reliable gasket contact.
  • Integral cast fins within the sump design.
  • Drilled and tapped mounting points for a sump baffle, if required.

Fitment and Installation

Suitable for six-cylinder Austin Healey 100/6 and 3000 models from BN4 through to BJ8.

Please note: the oil pump pick-up must be shortened to suit this sump. Follow the fitting instructions and confirm the pick-up position and clearance before completing installation.

For non-standard engines or modified oil pick-up arrangements, check the available clearance and pick-up position before final tightening.

Download Fitting Instructions (PDF)

What's Included

  • LM25 aluminium oil sump
  • Fitting kit
  • Sump plug
  • Fitting instructions

Related gasket set: Oil Sump Gasket Set (BN4-BJ8).

Technical Details

  • Models: Austin Healey 100/6 and 3000
  • Model range: BN4–BJ8
  • Engine: six-cylinder
  • Material: LM25 aluminium alloy
  • Manufacture: UK-cast and CNC-machined
  • Sealing faces: CNC-machined
  • Sump baffle provision: drilled and tapped mounting points

Fitting Notes

Clean the mating surfaces thoroughly and check gasket alignment before fitting. Tighten the sump evenly and confirm the position of the shortened oil pump pick-up before installation is completed.


Cape Sport Logo

INCLUDES:

  • FITTING KIT
  • SUMP PLUG & WASHER
  • FITTING INSTRUCTIONS

OE part number:
AEC203AL
Application:
BN4 - BJ8
Quantity per vehicle:
1
Items Per Pack:
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Your Price:
£312.50 Exc VAT
£375.00 Inc VAT
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Frequently Asked Questions

Do I have to modify the oil pump pick-up to fit it?
Yes. The oil pump pick-up needs shortening to suit this sump. Use the supplied fitting instructions, then confirm the pick-up position and clearance before final tightening.
Does it have provision for a sump baffle?
Yes. It includes drilled and tapped mounting points intended for fitting a sump baffle if required. A baffle is not necessary for every use case, but the mounting provision is there for applications that need it.
Is a sump plug included?
Yes. A sump plug is included. The required fitting kit and fitting instructions are also included, so the installation hardware and guidance are supplied with the sump.
What makes this a “premium” aluminium sump?
It is UK-cast in LM25 alloy and fully CNC-machined. That matters most at the sealing faces and critical mounting surfaces, where consistent machining supports predictable installation with the correct gasket set.
Which gasket set should be used?
Use the BN4–BJ8 oil sump gasket set. The correct related item is ENG666 Oil Sump Gasket Set (BN4-BJ8).
Will this stop oil leaks?
The sealing faces are CNC-machined to support accurate gasket contact. Final sealing still depends on correct gasket choice, clean mating faces, and even tightening during installation.
Will this sump fit my BN4, BN6, BN7, BT7 or BJ8?
Yes. It is for Austin Healey six-cylinder models BN4 through BJ8. This includes 100/6 and 3000 applications within the BN4–BJ8 range.

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