Why use a dedicated diagonal cutter
The D228-8 has short jaws, bevelled cutting edges and high-leverage joint geometry. Those features focus it on cutting rather than the reaching and holding work of D203-8. Choose the jaw approach that lets the cutting edges contact the material correctly. Extra leverage does not justify twisting the tool or using it as an improvised bolt cutter.
Check the material, not just the diameter
Klein specifies induction-hardened cutting knives, but the material and capacity guidance still governs what may be cut. Automotive work includes clips, hardened pins and different wire types that should not be treated as equivalent. Protect nearby wiring and control the work so a cut end does not damage components. If the material is uncertain, identify it before increasing force.
The standard handle configuration
This record is D228-8, approximately 7.98 inches overall, rather than the insulated -INS or tethered -TT variant. Ordinary handle covering does not establish electrical insulation. The suffix matters when comparing listings, especially where a retail photo shows several family members. Check the exact selected product rather than assuming all eight-inch Klein cutters share the same safety features.
Where it fits in a starter kit
D203-8 supplies reach and handling, and locking or adjustable pliers provide different gripping functions. The D228-8 should be bought because cutting is required, not ranked as a universal replacement for those tools. It is already a shared catalogue product, so existing owners should reuse a suitable tool rather than add a duplicate because automotive appears as another trade.