Rapid Worldwide Delivery of over 200,000 parts and accessories
Pre-paid import duties to bypass your local customs
2 Year Warranty on all parts and accessories

ERR737 | Oil Filler Cap - 2.5L NA Diesel | Defender 1987-2006

Part Number: ERR737
Full Description Below
Part Number
Brand
Quality
Note
Stock
Stock quantities are updated based on warehouse stock checks and the latest information we have from our suppliers. There is a small chance that we can't fulfill your order if the quantity shown is very low.

To check the stock of Genuine Parts before placing an order please use our Contact Us page
Price
QTY
Part Number
Brand
BRITPART
Quality
Replacement Part
Note
2 Year Warranty
Stock
Stock quantities are updated based on warehouse stock checks and the latest information we have from our suppliers. There is a small chance that we can't fulfill your order if the quantity shown is very low.

To check the stock of Genuine Parts before placing an order please use our Contact Us page
50+
Price
£78.40 £65.33
ERR737.C8
QTY
Part Number
Brand
ALLMAKES
Quality
Replacement Part
Note
2 Year Warranty
Stock
Stock quantities are updated based on warehouse stock checks and the latest information we have from our suppliers. There is a small chance that we can't fulfill your order if the quantity shown is very low.

To check the stock of Genuine Parts before placing an order please use our Contact Us page
1+ (To Order)
Price
£82.40 £68.67
ERR737.Z8
QTY
Part Number
Brand
LAND ROVER
Quality
Original Part from Land Rover UK
Note
1 Year Warranty
Stock
Stock quantities are updated based on warehouse stock checks and the latest information we have from our suppliers. There is a small chance that we can't fulfill your order if the quantity shown is very low.

To check the stock of Genuine Parts before placing an order please use our Contact Us page
1+ (To Order)
Price
£194.59 £162.16
ERR737.L8
QTY

Land Rover Part Number: ERR737 - Oil Filler Cap

ERR737 is an oil filler cap fitted to the rocker cover breather on 2.5L 4-cylinder naturally aspirated diesel Defender models. It seals the rocker cover oil filler opening to keep dirt and moisture out while allowing crankcase ventilation through the breather; inspect the cap and its seal during routine oil services and replace if damaged.

Compatibility

  • Defender (1987-2006) - 2.5L 4-cylinder naturally aspirated diesel

Frequently Asked Questions

ERR737 serves as the oil filler cap for the rocker cover breather on 2.5L 4-cylinder naturally aspirated diesel Defenders. It seals the filler opening to prevent dirt and moisture ingress while allowing crankcase ventilation through the breather; check the cap and its seal during routine oil services and replace if cracked or worn to avoid contamination or leaks.

ModelVariant
Land Rover Defender (1987-2006)Rocker cover & breather - 2.5L 4-cylinder naturally aspirated diesel

If you are unsure of compatibility with your vehicle, you can also confirm by checking against your V.I.N. Simply reach out to us with your V.I.N and desired part number via our Contact page or use our Finding Part Numbers page.

Inspect the oil filler cap at each oil service and replace if the rubber seal is cracked, the cap is damaged, or threads are worn; replacing a degraded cap prevents leaks and contamination. If unsure, consult the vehicle manual or a qualified technician.

  • C8 products are usually supplied by Britpart.
  • L8 products are genuine Land Rover parts.

All products and accessories available on LRDirect.com come with a 2-year warranty.