Cummins ISX 3687932 Fill Cap PAI 141381OEMCROSS REFERENCE: 2869221 3687932 3104375 APPLICATION: Cummins ISX ISB ISM M11 Multiple Use Application. DETAILS: Genuine Part BRAND: PAI 141381OEM Cummins 3687932 Fill Cap PAI 141381OEM. Diesel parts and heavy duty parts. Supports fluid sealing and protects against external contamination. All components are proudly manufactured in the U. S. A. by PAI Industries Inc., an ISO9001 certified company with over 50 years of experience in the heavy duty truck