EXHIBIT 4.1 NAVISTAR FINANCIAL SECURITIES CORPORATION SELLER NAVISTAR FINANCIAL CORPORATION SERVICER AND THE BANK OF NEW YORK MASTER TRUST TRUSTEE ON BEHALF OF THE SERIES 2003-1 CERTIFICATEHOLDERS SERIES 2003-1 SUPPLEMENT DATED AS OF JULY 10, 2003 TO...Pooling and Servicing Agreement • July 11th, 2003 • Navistar Financial Dealer Note Master Trust • Asset-backed securities • New York
200,000,000 Class A Floating Rate Dealer Note Asset Backed Certificates, Series 2003-1 $12,000,000 Class B Floating Rate Dealer Note Asset Backed Certificates, Series 2003-1Underwriting Agreement • July 11th, 2003 • Navistar Financial Dealer Note Master Trust • Asset-backed securities • New York
