diff --git a/opencl/test/unit_test/offline_compiler/offline_compiler_tests.cpp b/opencl/test/unit_test/offline_compiler/offline_compiler_tests.cpp
index 7e73f869b9..cb3c6ca31a 100644
--- a/opencl/test/unit_test/offline_compiler/offline_compiler_tests.cpp
+++ b/opencl/test/unit_test/offline_compiler/offline_compiler_tests.cpp
@@ -5839,4 +5839,33 @@ TEST_F(OfflineCompilerTests, GivenDebugFlagWhenBuildingFromSourceThenTemporarySo
     std::string expectedSOption = "-s \"" + expectedTempFilePath.string() + "\"";
     EXPECT_TRUE(CompilerOptions::contains(mockOfflineCompiler.options, expectedSOption));
 }
+
+TEST(OclocOutputFileExtensions, GivenKnownFileFormatTheChooseProperExtension) {
+    using namespace IGC::CodeType;
+    std::pair<IGC::CodeType::CodeType_t, const char *> expectedExts[] = {
+        {llvmLl, ".ll"},
+        {llvmBc, ".bc"},
+        {spirV, ".spv"},
+        {oclC, ".cl"},
+        {oclCpp, ".cl"},
+        {oclGenBin, ".bin"},
+        {elf, ".bin"},
+        {undefined, ".bin"},
+        {invalid, ".bin"}};
+
+    for (const auto &[codeType, expectedExt] : expectedExts) {
+        auto ext = NEO::getFileExtension(codeType);
+        EXPECT_STREQ(expectedExt, ext.c_str());
+    }
+}
+
+TEST(OclocOutputFileExtensions, GivenCustomFileFormatThenUseItAsExtension) {
+    auto customCodeType = IGC::CodeType::CodeTypeCoder::Enc("TXT");
+    auto ext = NEO::getFileExtension(customCodeType);
+    EXPECT_STREQ(".txt", ext.c_str());
+
+    customCodeType = IGC::CodeType::CodeTypeCoder::Enc("MD");
+    ext = NEO::getFileExtension(customCodeType);
+    EXPECT_STREQ(".md", ext.c_str());
+}
 } // namespace NEO
diff --git a/shared/offline_compiler/source/offline_compiler.cpp b/shared/offline_compiler/source/offline_compiler.cpp
index 82552ff022..ae30806024 100644
--- a/shared/offline_compiler/source/offline_compiler.cpp
+++ b/shared/offline_compiler/source/offline_compiler.cpp
@@ -1625,7 +1625,7 @@ void OfflineCompiler::writeOutAllFiles() {
         return;
     }
 
-    if (irBinary && (this->inputCodeType != IGC::CodeType::spirV)) {
+    if (irBinary && (this->inputCodeType == IGC::CodeType::oclC)) {
         std::string irOutputFileName = generateFilePathForIr(fileBase) + generateOptsSuffix();
 
         argHelper->saveOutput(irOutputFileName, irBinary, irBinarySize);
diff --git a/shared/offline_compiler/source/offline_compiler.h b/shared/offline_compiler/source/offline_compiler.h
index fc299197b5..912f433820 100644
--- a/shared/offline_compiler/source/offline_compiler.h
+++ b/shared/offline_compiler/source/offline_compiler.h
@@ -11,6 +11,7 @@
 #include "shared/source/compiler_interface/compiler_options.h"
 #include "shared/source/helpers/hw_info.h"
 #include "shared/source/helpers/non_copyable_or_moveable.h"
+#include "shared/source/helpers/string_helpers.h"
 #include "shared/source/utilities/arrayref.h"
 #include "shared/source/utilities/const_stringref.h"
 
@@ -50,9 +51,14 @@ constexpr bool isIntermediateRepresentation(IGC::CodeType::CodeType_t codeType)
     return false == ((IGC::CodeType::oclC == codeType) || (IGC::CodeType::oclCpp == codeType) || (IGC::CodeType::oclGenBin == codeType));
 }
 
-constexpr const char *getFileExtension(IGC::CodeType::CodeType_t codeType) {
+inline std::string getFileExtension(IGC::CodeType::CodeType_t codeType) {
     switch (codeType) {
     default:
+        return "." + StringHelpers::toLower(IGC::CodeType::CodeTypeCoder::Dec(codeType));
+    case IGC::CodeType::oclGenBin:
+    case IGC::CodeType::elf:
+    case IGC::CodeType::undefined:
+    case IGC::CodeType::invalid:
         return ".bin";
     case IGC::CodeType::llvmBc:
         return ".bc";
@@ -60,6 +66,10 @@ constexpr const char *getFileExtension(IGC::CodeType::CodeType_t codeType) {
         return ".ll";
     case IGC::CodeType::spirV:
         return ".spv";
+    case IGC::CodeType::oclC:
+        return ".cl";
+    case IGC::CodeType::oclCpp:
+        return ".cl";
     }
 }
 
@@ -186,8 +196,8 @@ All supported acronyms: %s.
     void updateBuildLog(const char *pErrorString, const size_t errorStringSize);
     MOCKABLE_VIRTUAL bool generateElfBinary();
     std::string generateFilePathForIr(const std::string &fileNameBase) {
-        const char *ext = getFileExtension(intermediateRepresentation);
-        return generateFilePath(outputDirectory, fileNameBase, ext);
+        auto ext = getFileExtension(intermediateRepresentation);
+        return generateFilePath(outputDirectory, fileNameBase, ext.c_str());
     }
 
     std::string generateOptsSuffix() {
diff --git a/shared/source/helpers/string_helpers.h b/shared/source/helpers/string_helpers.h
index 65ec1d0138..454ad650f2 100644
--- a/shared/source/helpers/string_helpers.h
+++ b/shared/source/helpers/string_helpers.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021-2022 Intel Corporation
+ * Copyright (C) 2021-2025 Intel Corporation
  *
  * SPDX-License-Identifier: MIT
  *
@@ -10,6 +10,7 @@
 
 #include "CL/cl.h"
 
+#include <algorithm>
 #include <cstdint>
 #include <cstring>
 #include <string>
@@ -83,4 +84,14 @@ inline std::vector<std::string> split(const std::string &input, const char *deli
 inline uint32_t toUint32t(const std::string &input) {
     return static_cast<uint32_t>(std::stoul(input, nullptr, 0));
 }
+
+inline void toLowerInPlace(std::string &src) {
+    std::transform(src.begin(), src.end(), src.begin(), [](unsigned char c) { return std::tolower(c); });
+}
+
+inline std::string toLower(const std::string &src) {
+    std::string ret = src;
+    toLowerInPlace(ret);
+    return ret;
+}
 } // namespace StringHelpers
diff --git a/shared/test/unit_test/helpers/string_to_hash_tests.cpp b/shared/test/unit_test/helpers/string_to_hash_tests.cpp
index db09ae2202..54be473729 100644
--- a/shared/test/unit_test/helpers/string_to_hash_tests.cpp
+++ b/shared/test/unit_test/helpers/string_to_hash_tests.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2022 Intel Corporation
+ * Copyright (C) 2018-2025 Intel Corporation
  *
  * SPDX-License-Identifier: MIT
  *
@@ -12,6 +12,11 @@
 
 using NEO::Hash;
 
+TEST(ToLower, GiventStringThenChangeItToLowerCase) {
+    std::string ls = StringHelpers::toLower("SomeTEXT");
+    EXPECT_STREQ("sometext", ls.c_str());
+}
+
 TEST(CreateCombinedStrings, GivenSingleStringWhenCreatingCombinedStringThenDstStringMatchesSrcString) {
     std::string dstString;
     size_t dstStringSizeInBytes = 0;