NKJ203 GASKET.  Leyland 6/98 Cylinder Head Gasket for Leyland and Marshall tractor engines, BMC marine engines and Leyland truck engines.

Genuine Payen gasket as used by Leyland.

Dimensions:  31¹/₈” x 8³/₈” (790mm x 213mm).

Cylinder head torque = 100 lb-ft (13.8 kg-m).

Click here to view a printable version of the cylinder head nut tightening and slackening sequence.

Fitted to engines:

• BMC 5.1, 6-Cylinder
• BMC 5.7 L, 6-Cylinder
• Leyland BMC 5.1 UD, 6-Cylinder
• Leyland BMC 5.7 J, 6-Cylinder
• Leyland 6/98, 6-Cylinder
• Leyland 6/98 DV, 6-Cylinder
• Leyland 6/98 NV, 6-Cylinder

Fitted to:

• Leyland 285, 2100, 485, 4100
• Marshall 100, 115, 125, 145
• Thornycroft T345 marine engine
• Sealord 5.7 marine engine
• Leyland Boxer Trucks
• Leyland Roadrunner Trucks 6/98NV

Alternative part number: 86K622